1 files changed, 1 insertions, 1 deletions

diff --git a/xdelta3/testing/checksum_test.cc b/xdelta3/testing/checksum_test.cc
index 5b57a49..c508753 100644
--- a/xdelta3/testing/checksum_test.cc
+++ b/xdelta3/testing/checksum_test.cc
@@ -473,7 +473,7 @@ struct test_result : public test_result_base {
     usize_t i;
 
     for (i = 3; i <= bits; i += 1) {
-      if (slots <= (1 << i)) {
+      if (slots <= (1U << i)) {
         return i - Checksum::compaction;
       }
     }