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Dreyfus/The Boston Company Small Cap Growth Fund

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Supplement [Text Block]

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October 18, 2013

DREYFUS INVESTMENT FUNDS
Dreyfus/The Boston Company Small Cap Growth Fund

Supplement to Summary and Statutory Prospectuses
dated July 1, 2013

IMPORTANT NOTICE REGARDING CHANGE IN INVESTMENT POLICY

Risk/Return [Heading]

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Dreyfus/The Boston Company Small Cap Growth Fund

Strategy [Heading]

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The following information will supersede and replace the second sentence of the first paragraph in "Principal Investment Strategy" in the summary prospectus and "Fund Summary - Principal Investment Strategy" in the prospectus and the fourth and fifth sentences of the first paragraph in "Fund Details - Goal and Approach" in the prospectus:

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The fund currently considers small-cap companies to be those with total market capitalizations that are equal to or less than the total market capitalization of the largest company included in the Russell 2000^® Growth Index (the “Index”), the fund’s benchmark index. As of September 30, 2013, the market capitalization of the largest company in the Index was approximately $4.79 billion. Market capitalization varies with market changes and reconstitutions of the Index.