diff --git a/BeefLibs/corlib/src/String.bf b/BeefLibs/corlib/src/String.bf
index 413930dd..690953a1 100644
--- a/BeefLibs/corlib/src/String.bf
+++ b/BeefLibs/corlib/src/String.bf
@@ -1937,7 +1937,7 @@ namespace System
 			{
 				// Optimized version for single-character replacements
 				char8 findC = find[0];
-				while (inIdx < mLength - find.mLength)
+				while (inIdx < mLength)
 				{
 					if (ptr[inIdx] == findC)
 					{