1 files changed, 1 insertions, 1 deletions
diff --git a/zix/bitset.c b/zix/bitset.c
index dbb3d63..6a4d245 100644
--- a/zix/bitset.c
+++ b/zix/bitset.c
@@ -78,7 +78,7 @@ zix_bitset_count_up_to(const ZixBitset* b, const ZixBitsetTally* t, size_t i)
 	}
 
 	const ZixBitset mask = ~(~(ZixBitset)0 << extra);
-	count += __builtin_popcountl(b[full_elems] & mask);
+	count += (size_t)__builtin_popcountl(b[full_elems] & mask);
 
 	return count;
 }