1 files changed, 1 insertions, 1 deletions
diff --git a/src/bplist.c b/src/bplist.c
index 0591526..663a118 100644
--- a/src/bplist.c
+++ b/src/bplist.c
@@ -223,7 +223,7 @@ static uint64_t UINT_TO_HOST(const void* x, uint8_t n)
 static int uint64_mul_overflow(uint64_t a, uint64_t b, uint64_t *res)
 {
     *res = a * b;
-    return (a > UINT64_MAX / b);
+    return (b != 0 && a > UINT64_MAX / b);
 }
 #endif