		MASTR Asset-Backed Securities Trust 2005-FRE1						Contact:
		Mortgage Pass-Through Certificates, Series 2005-FRE1						Brian Giel
								Account Administrator
		STATEMENT TO CERTIFICATEHOLDERS						651-495-3844
		Section 5.02 of the Trust Agreement, dated November 1, 2005						Brian.giel@usbank.com

Distribution Date:

27-Dec-05

		Original	Beginning				Interest		Ending
		Certificate	Certificate	Principal	Interest	Realized Loss	Shortfall	Total	Certificate
Class	Cusip	Face Value	Balance (1)	Distribution	Distribution	of Principal	Amount	Distribution	Balance (1)
A-1	57643LLV6	$407,426,000.00	$407,426,000.00	$6,356,706.84	$1,413,315.52	N/A	$0.00	$7,770,022.36	$401,069,293.16
A-2	57643LLW4	$279,000,000.00	$279,000,000.00	$5,834,455.19	$937,440.00	N/A	$0.00	$6,771,895.19	$273,165,544.81
A-3	57643LLX2	$94,500,000.00	$94,500,000.00	$0.00	$322,665.00	N/A	$0.00	$322,665.00	$94,500,000.00
A-4	57643LLY0	$105,000,000.00	$105,000,000.00	$0.00	$364,233.33	N/A	$0.00	$364,233.33	$105,000,000.00
A-5	57643LLZ7	$22,116,000.00	$22,116,000.00	$0.00	$78,438.08	N/A	$0.00	$78,438.08	$22,116,000.00
M-1	57643LMA1	$110,266,000.00	$110,266,000.00	$0.00	$403,941.11	$0.00	$0.00	$403,941.11	$110,266,000.00
M-2	57643LMB9	$41,575,000.00	$41,575,000.00	$0.00	$155,536.69	$0.00	$0.00	$155,536.69	$41,575,000.00
M-3	57643LMC7	$21,691,000.00	$21,691,000.00	$0.00	$81,991.98	$0.00	$0.00	$81,991.98	$21,691,000.00
M-4	57643LMD5	$21,691,000.00	$21,691,000.00	$0.00	$82,498.10	$0.00	$0.00	$82,498.10	$21,691,000.00
M-5	57643LME3	$19,884,000.00	$19,884,000.00	$0.00	$84,440.72	$0.00	$0.00	$84,440.72	$19,884,000.00
M-6	57643LMF0	$14,461,000.00	$14,461,000.00	$0.00	$63,098.16	$0.00	$0.00	$63,098.16	$14,461,000.00
M-7	57643LMG8	$13,858,000.00	$13,858,000.00	$0.00	$71,245.52	$0.00	$0.00	$71,245.52	$13,858,000.00
M-8	57643LMH6	$13,858,000.00	$13,858,000.00	$0.00	$72,323.36	$0.00	$0.00	$72,323.36	$13,858,000.00
M-9	57643LMJ2	$10,243,000.00	$10,243,000.00	$0.00	$53,457.08	$0.00	$0.00	$53,457.08	$10,243,000.00
M-10	57643LMK9	$8,435,000.00	$8,435,000.00	$0.00	$44,021.33	$0.00	$0.00	$44,021.33	$8,435,000.00
CE	NA	$21,094,781.89	$21,094,781.89	$0.00	$2,621,050.26	N/A	$0.00	$2,621,050.26	$21,094,781.29
P	NA	$100.00	$100.00	$0.00	$82,887.15	N/A	$0.00	$82,887.15	$100.00
Swap IO	NA	$0.00	$0.00	$0.00	0.00	N/A	$0.00	$0.00	$0.00
R	NA	$0.00	$0.00	$0.00	$0.00	N/A	$0.00	$0.00	$0.00
R-X	NA	$0.00	$0.00	$0.00	$0.00	N/A	$0.00	$0.00	$0.00
Total		$1,205,098,881.89	$1,205,098,881.89	$12,191,162.03	$6,932,583.39	$0.00	$0.00	$19,123,745.42	$1,192,907,719.26

			Interest		Ending		Current	Next
	Principal	Interest	Carry-forward	Total	Certificate		Pass-Through	Pass-Through
Class	Distribution	Distribution	Amount	Distribution	Balance	Class	Interest Rate	Interest Rate *
A-1	$15.60211386	$3.46888888	$0.00000000	$19.07100273	$984.39788614	A-1	4.46000%	4.62875%
A-2	$20.91202577	$3.36000000	$0.00000000	$24.27202577	$979.08797423	A-2	4.32000%	4.48875%
A-3	$0.00000000	$3.41444444	$0.00000000	$3.41444444	$1,000.00000000	A-3	4.39000%	4.55875%
A-4	$0.00000000	$3.46888886	$0.00000000	$3.46888886	$1,000.00000000	A-4	4.46000%	4.62875%
A-5	$0.00000000	$3.54666667	$0.00000000	$3.54666667	$1,000.00000000	A-5	4.56000%	4.72875%
M-1	$0.00000000	$3.66333330	$0.00000000	$3.66333330	$1,000.00000000	M-1	4.71000%	4.87875%
M-2	$0.00000000	$3.74111100	$0.00000000	$3.74111100	$1,000.00000000	M-2	4.81000%	4.97875%
M-3	$0.00000000	$3.78000000	$0.00000000	$3.78000000	$1,000.00000000	M-3	4.86000%	5.02875%
M-4	$0.00000000	$3.80333318	$0.00000000	$3.80333318	$1,000.00000000	M-4	4.89000%	5.05875%
M-5	$0.00000000	$4.24666667	$0.00000000	$4.24666667	$1,000.00000000	M-5	5.46000%	5.62875%
M-6	$0.00000000	$4.36333310	$0.00000000	$4.36333310	$1,000.00000000	M-6	5.61000%	5.77875%
M-7	$0.00000000	$5.14111127	$0.00000000	$5.14111127	$1,000.00000000	M-7	6.61000%	6.77875%
M-8	$0.00000000	$5.21888873	$0.00000000	$5.21888873	$1,000.00000000	M-8	6.71000%	6.87875%
M-9	$0.00000000	$5.21888900	$0.00000000	$5.21888900	$1,000.00000000	M-9	6.71000%	6.87875%
M-10	$0.00000000	$5.21888915	$0.00000000	$5.21888915	$1,000.00000000	M-10	6.71000%	6.87875%
CE	$0.00000000	$124.25111924	$0.00000000	$124.25111924	$999.99997156	CE	2.60996%	NA
P	$0.00000000	828,871.50	$0.00000000	828,871.50	$1,000.00000000	P	0.00000%	NA
R	$0.00000000	$0.00000000	$0.00000000	$0.00000000	$0.00000000	R	0.00000%	NA
R-X	$0.00000000	$0.00000000	$0.00000000	$0.00000000	$0.00000000	R-X	0.00000%
	***The Class CE factor is for the Notional Balance					LIBOR	4.21000%
								*Estimated

Page 1

		MASTR Asset-Backed Securities Trust 2005-FRE1						Contact:
		Mortgage Pass-Through Certificates, Series 2005-FRE1						Brian Giel
								Account Administrator
		STATEMENT TO CERTIFICATEHOLDERS						651-495-3844
		Section 5.02 of the Trust Agreement, dated November 1, 2005						Brian.giel@usbank.com

Distribution Date:

27-Dec-05

(i)	Principal Distributions:	Group 1	Group 2	Total
	Beginning Balance	540,710,947.45	664,387,933.84	1,205,098,881.29
	Scheduled Principal	343,762.97	373,871.43	717,634.40
	Prepayments (Includes Curtailments)	6,012,943.87	5,460,583.76	11,473,527.63
	Net Liquidation Proceeds	0.00	0.00	0.00
	Loan Purchase Prices	0.00	0.00	0.00
	Total Principal Remittance	6,356,706.84	5,834,455.19	12,191,162.03
	Net Realized Losses	0.00	0.00	0.00
	Ending Balance	534,354,240.61	658,553,478.65	1,192,907,719.26
	Ending Count	3,300	2,337	5,637

(ii)

Aggregate Ending Collateral Balance

534,354,240.61

658,553,478.65

1,192,907,719.26

(iii)	Overcollateralization Target Amount	21,094,781.29
	Ending Overcollateralization Amount	0.00
	Ending Overcollateralization Deficiency Amount	0.00
	Credit Enhancement Percentage	24.64999%

(iv)	Interest Distributions:
	Scheduled Interest - Net of Serv Fee	3,145,896.62	3,718,863.36	6,864,759.98
	Less Relief Act Interest Shortfall	0.00	0.00	0.00
	Less Net Prepayment Interest Shortfall	0.00	0.00	0.00
		3,145,896.62	3,718,863.36	6,864,759.98

(v)	Servicing Fee	225,296.43	276,828.27	502,124.70
	Trustee Fee	6,758.89	8,304.85	15,063.74
	Extraordinary Trust Fund Expenses			0.00

(vi)	Advances	Amount of Advances required by the Servicer	5,350,487.66	5,350,487.66
		Amount of Advances actually made	5,350,487.66	5,350,487.66
		Excess of Advances required over Advances actually made	0.00	0.00

Page 2

		MASTR Asset-Backed Securities Trust 2005-FRE1						Contact:
		Mortgage Pass-Through Certificates, Series 2005-FRE1						Brian Giel
								Account Administrator
		STATEMENT TO CERTIFICATEHOLDERS						651-495-3844
		Section 5.02 of the Trust Agreement, dated November 1, 2005						Brian.giel@usbank.com

Distribution Date:

27-Dec-05

(vii)

Current amount of Prepayment Premiums distributed to Class P Certificate

82,887.15

0.00

82,887.15

(viii)	Realized Losses incurred during the related Due Period					0.00	0.00	0.00
	Cumulative Realized Losses since Startup Day					0.00	0.00	0.00
	Subsequent Recoveries incurred during the related Due Period					0.00	0.00	0.00
	Subsequent Recoveries since Startup Day					0.00	0.00	0.00

(ix)

Aggregate Loss Serverity Percentage

0.00%

(x)

Delinquency Information

	30-59 days delinquent		60-89 days delinquent		90 or more days delinquent
	Count	Balance	Count	Balance	Count	Balance
Group 1	7	880,995.69	1	230,328.19	0	0.00
Group 2	10	3,096,273.18	0	0.00	0	0.00
Total	17	3,977,268.87	1	230,328.19	0	0.00
*Note: The above statistics do not include loans in foreclosure or bankruptcy proceedings or REO properties.

	Outstanding Loans		Foreclosure		Bankruptcy		REO
	Count	Balance	Count	Balance	Count	Balance	Count	Balance	Market Value
Group 1	3,300	534,354,240.61	0	0.00	0	0.00	0	0.00	0.00
Group 2	2,337	658,553,478.65	0	0.00	0	0.00	0	0.00	0.00
Total	5,637	1,192,907,719.26	0	0.00	0	0.00	0	0.00	0.00

	60-89 days delinquent in Bankruptcy		90 or more days delinquent in Bankruptcy
	Count	Balance	Count	Balance
Group 1	0	0.00	0	0.00
Group 2	0	0.00	0	0.00
Total	0	0.00	0	0.00

(xi)	Outstanding Carryforward Interest							0.00
	Outstanding Net Prepayment Interest Shortfalls							0.00
	Outstanding Basis Risk Shortfalls							0.00
	Outstanding Unpaid Basis Risk Shortfalls							0.00

Page 3

		MASTR Asset-Backed Securities Trust 2005-FRE1						Contact:
		Mortgage Pass-Through Certificates, Series 2005-FRE1						Brian Giel
								Account Administrator
		STATEMENT TO CERTIFICATEHOLDERS						651-495-3844
		Section 5.02 of the Trust Agreement, dated November 1, 2005						Brian.giel@usbank.com

Distribution Date:

27-Dec-05

(xii)	Net Swap Payment to the Supplemental Interest Trust	0.00
	Net Swap Payment to the Swap Counterparty	0.00
	Swap LT-IO Shortfall	-
	Swap Termination Payment to the Supplemental Interest Trust	0.00
	Swap Termination Payment to the Swap Counterparty	0.00

(xiii)	Has Stepdown Date Occurred?							NO
	Has Trigger Event Occurred?							NO

(xiv)	Weighted Average Current Coupon					7.47417%	7.21257%	7.32994%
	Weighted Average Current Maturity					355	356	356

(xv)

Available Funds

19,138,809.16

(xiv)			Monthly		Remaining	Net	Reduction from the Allocation of:
		Interest	Interest	Interest	Unpaid	Wac Rate		Prepayment	Relief Act
		Distribution	Distributable	Shortfall	Interest	Carryover	Realized	Interest	Interest
	Class	Amount	Amount	Amount	Amount	Amount	Losses	Shortfalls	Shortfalls
	A-1	$1,413,315.52	$1,413,315.52	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
	A-2	$937,440.00	$937,440.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
	A-3	$322,665.00	$322,665.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
	A-4	$364,233.33	$364,233.33	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
	A-5	$78,438.08	$78,438.08	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
	M-1	$403,941.11	$403,941.11	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
	M-2	$155,536.69	$155,536.69	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
	M-3	$81,991.98	$81,991.98	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
	M-4	$82,498.10	$82,498.10	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
	M-5	$84,440.72	$84,440.72	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
	M-6	$63,098.16	$63,098.16	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
	M-7	$71,245.52	$71,245.52	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
	M-8	$72,323.36	$72,323.36	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
	M-9	$53,457.08	$53,457.08	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
	M-10	$44,021.33	$44,021.33	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
	CE	$2,621,050.26	$2,621,050.26	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
	P	$82,887.15	$82,887.15	N/A	N/A	N/A	$0.00	$0.00	$0.00
	Total	$6,932,583.39	$6,932,583.39	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00

Page 4

MASTR Asset Backed Securities Trust 2005-FRE1 8-K