diff --git a/lib/bitmap.c b/lib/bitmap.c
index faaf720..ce2ec80 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -185,11 +185,14 @@
 				const unsigned long *bitmap2, unsigned int bits)
 {
 	unsigned int k;
-	unsigned int nr = BITS_TO_LONGS(bits);
+	unsigned int lim = bits/BITS_PER_LONG;
 	unsigned long result = 0;
 
-	for (k = 0; k < nr; k++)
+	for (k = 0; k < lim; k++)
 		result |= (dst[k] = bitmap1[k] & bitmap2[k]);
+	if (bits % BITS_PER_LONG)
+		result |= (dst[k] = bitmap1[k] & bitmap2[k] &
+			   BITMAP_LAST_WORD_MASK(bits));
 	return result != 0;
 }
 EXPORT_SYMBOL(__bitmap_and);