<SEC-DOCUMENT>0000914775-17-000034-index.html : 20170323
<SEC-HEADER>0000914775-17-000034.hdr.sgml : 20170323
<ACCEPTANCE-DATETIME>20170323084804
ACCESSION NUMBER:		0000914775-17-000034
CONFORMED SUBMISSION TYPE:	497
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20170323
DATE AS OF CHANGE:		20170323
EFFECTIVENESS DATE:		20170323

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DREYFUS INVESTMENT FUNDS
		CENTRAL INDEX KEY:			0000799295
		IRS NUMBER:				043106135
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		497
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	033-08214
		FILM NUMBER:		17708260

	BUSINESS ADDRESS:	
		STREET 1:		200 PARK AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10166
		BUSINESS PHONE:		212-922-6000

	MAIL ADDRESS:	
		STREET 1:		200 PARK AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10166

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MELLON INSTITUTIONAL FUNDS INVESTMENT TRUST
		DATE OF NAME CHANGE:	20030707

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	STANDISH AYER & WOOD INVESTMENT TRUST
		DATE OF NAME CHANGE:	19920703
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000799295
<SERIES-ID>S000011516
<SERIES-NAME>Dreyfus/The Boston Company Small Cap Value Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000171546
<CLASS-CONTRACT-NAME>Class Y
<CLASS-CONTRACT-TICKER-SYMBOL>BOSYX
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>497
<SEQUENCE>1
<FILENAME>stickerundertakingdtbcscvf03.htm
<DESCRIPTION>SUPPLEMENT TO PROSPECTUS
<TEXT>
Document 1 - file: stickerundertakingdtbcscvf03.htm

</DOCUMENT>
</SEC-DOCUMENT>