diff --git a/src/util/util.h b/src/util/util.h
index a4bf78073..f05e4f9f4 100644
--- a/src/util/util.h
+++ b/src/util/util.h
@@ -142,6 +142,7 @@ static inline unsigned get_num_1bits(uint64_t v) {
     v = (v + (v >> 4)) & 0x0F0F0F0F0F0F0F0F;
     uint64_t r = (v * 0x0101010101010101) >> 56;
     SASSERT(c == r);
+    return r;
 #endif
 }