diff --git a/src/lib/formats/flopimg.c b/src/lib/formats/flopimg.c
index 2f7e80666c5..b445b286469 100644
--- a/src/lib/formats/flopimg.c
+++ b/src/lib/formats/flopimg.c
@@ -1192,12 +1192,10 @@ void floppy_image_format_t::mfm_w(UINT32 *buffer, int &offset, int n, UINT32 val
 
 void floppy_image_format_t::fm_w(UINT32 *buffer, int &offset, int n, UINT32 val, UINT32 size)
 {
-//	int prec = offset ? bit_r(buffer, offset-1) : 0;
 	for(int i=n-1; i>=0; i--) {
 		int bit = (val >> i) & 1;
 		bit_w(buffer, offset++, true);
 		bit_w(buffer, offset++, bit, size);
-//		prec = bit;
 	}
 }