diff --git a/libFLAC/fixed.c b/libFLAC/fixed.c
index ed9f498..2e16251 100644
--- a/libFLAC/fixed.c
+++ b/libFLAC/fixed.c
@@ -87,7 +87,7 @@
 	bits = FLAC__bitmath_ilog2(err)+1;
 	if(bits > 16) {
 		err >>= (bits-16);
-		fracbits -= (bits-16);
+		fracbits -= (int)(bits-16);
 	}
 	rbps = (FLAC__uint32)err;