1 files changed, 2 insertions, 2 deletions
diff --git a/source/core/slang-string.h b/source/core/slang-string.h
index 5a20d8b75..4c87ce81e 100644
--- a/source/core/slang-string.h
+++ b/source/core/slang-string.h
@@ -111,9 +111,9 @@ namespace Slang
             return -1;
         }
 
-        const char& operator[](int i) const
+        const char& operator[](UInt i) const
         {
-            assert(i >= 0 && i < int(endData - beginData));
+            assert(i < UInt(endData - beginData));
             return beginData[i];
         }