diff --git a/test/scan.c b/test/scan.c
index 10c4614..be92efe 100644
--- a/test/scan.c
+++ b/test/scan.c
@@ -12,5 +12,6 @@ int main() {
     assert(scan_ulong("4294967296",&l)==9 && l==429496729);
     assert(scan_ulong("42949672950",&l)==10 && l==4294967295ul);
     assert(scan_ulong("5294967295",&l)==9 && l==529496729);
+    assert(scan_ulong("4295067295",&l)==9 && l==429506729);
   }
 }