diff --git a/stepmania/src/RageUtil.h b/stepmania/src/RageUtil.h
index 9bb7c3c972..a0863cfef8 100644
--- a/stepmania/src/RageUtil.h
+++ b/stepmania/src/RageUtil.h
@@ -141,7 +141,7 @@ float HHMMSSToSeconds( const CString &sHMS );
 CString SecondsToHHMMSS( float fSecs );
 CString SecondsToMMSSMsMs( float fSecs );
 CString PrettyPercent( float fNumerator, float fDenominator );
-CString PrettyPercent( int fNumerator, int fDenominator ) { return PrettyPercent( float(fNumerator), float(fDenominator) ); }
+inline CString PrettyPercent( int fNumerator, int fDenominator ) { return PrettyPercent( float(fNumerator), float(fDenominator) ); }
 CString Commify( int iNum );