UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

~~Form~~ FORM 8-K

CURRENT REPORT

~~Pursuant~~PURSUANT TO toSECTION ~~Section~~ 13 orOR 15(d) ofOF ~~the~~THE

~~Securities~~SECURITIES ~~Exchange~~EXCHANGE ~~Act~~ACT ofOF 1934

Date of Report (Date of earliest event reported)

~~Reported): June 1, 2005 Credit Suisse First Boston Mortgage Securities Corp. CSFB Home Equity Pass~~25-~~Through Certificates, Series 2005~~May-~~AGE1~~05

CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP.
(Exact name of registrant as specified in its charter)
Delaware	333-120966	13-3320910
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)
Eleven Madison Avenue New York, New York 10010
(Address of Principal Executive Offices) (Zip Code)
Registrant’s telephone number, including area code (212) 325-2000

Credit Suisse First Boston Mortgage Securities Corp.,
CSFB Home Equity Pass-Through Certificates, Series 2005-AGE1

~~Check~~Credit ~~the~~Suisse ~~appropriate~~First ~~box~~Boston ~~below~~Mortgage ifSecurities ~~the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:~~Corp.

~~[ ] Written communications pursuant to Rule 425 under the Securities Act~~ (17Exact Name ~~CFR~~of ~~230.425)~~Registrant [as ]Specified ~~Soliciting~~in ~~material~~its ~~pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12~~Charter) [ ] Pre-commencement communications pursuant to Rule 14d-2(d) under the Exchange Act (17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01. Other Events.

Delaware

333-120966-15

13-3320910

(State or Other Jurisdiction

Of Incorporation)

(Commission

File Number)

(I.R.S. Employer

Identification No.)

~~This~~11 ~~Current~~Madison ~~Report~~Avenue onNew ~~Form 8-K is being filed to file a copy of the Pooling and Servicing Agreement dated as of April 1~~York, ~~2005,~~New among Credit Suisse First Boston Mortgage Securities Corp., as depositor, DLJ Mortgage Capital, Inc., as seller, Select Portfolio Servicing, Inc., as servicer and U.S. Bank National Association, as trustee York(~~the~~Address ~~“Pooling~~of ~~and~~PrincipalExecutive ~~Servicing Agreement”~~Offices), in10010 ~~connection~~(Zip ~~with the issuance by Credit Suisse First Boston Mortgage Securities Corp. of CSFB Home Equity Pass-Through Certificates, Series 2005-AGE1.~~Code)

~~Item~~Registrant's ~~9.01.~~telephone number, including area code: (212) 325-2000

~~Financial~~Check ~~Statements,~~the ~~Pro~~appropriate ~~Forma~~box ~~Financial~~below ~~Information~~if ~~and~~the ~~Exhibits~~Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

[ ] Written communications pursuant to Rule 425 under the Securities Act (q17 CFR 230.425)

~~Not~~ [ ] ~~applicable~~Soliciting material pursuant to Rule 14a-12(b) under the Exchange Act (17 CFR 240.14a-12(b))

[ ] Pre-commencement communications pursuant to Rule 14d-2(rb) under the Exchange Act (17 CFR 240.14d-2(b))

~~Not~~ [ ] ~~applicable~~Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

~~(s)~~Item 8.01 Other Events.

~~Exhibits:~~On 25-May-05 a scheduled distribution was made from the Trust to holders of the Certificates. The Trustee has caused to be filed with the Commission, the Monthly Report dated 25-May-05. The Monthly Report is filed pursuant to and in accordance with (1) numerous no-action letters (2) current Commission policy in the area.

4Item 9.101 Financial ~~Pooling~~Statements and ~~Servicing Agreement~~Exhibits.

Exhibit No. 99.1

Monthly Distribution Report dated: 25-May-05

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the ~~registrant~~Registrant has duly caused this report to be signed on its behalf by the undersigned ~~thereunto~~hereunto duly authorized.

~~CREDIT~~By: U.S. ~~SUISSE~~Bank ~~FIRST~~National ~~BOSTON~~Association, ~~MORTGAGE CORP.~~as Trustee for:

Credit Suisse First Boston Mortgage Securities Corp.

CSFB Home Equity Pass-Through Certificates,

Series 2005-AGE1

By:

/s/ Becky ~~Craig Eckes__~~Warren

Name:

~~Craig~~Becky ~~Eckes~~Warren

Title:

Assistant Vice President

Dated: ~~June 1, 2005~~02-Jun-05

~~EXHIBIT~~Index ~~4.1~~to Exhibits

Exhibit No. 99.1

Monthly Distribution Report dated: 25-May-05

Filing Compare · CSFB Home Equity Pass-Through Certificates, Series 2005-AGE1