diff --git a/include/bx/string.h b/include/bx/string.h
index 76f9314..66f3a62 100644
--- a/include/bx/string.h
+++ b/include/bx/string.h
@@ -154,7 +154,7 @@ namespace bx
 				}
 			}
 
-			*end = '\0';
+			*_out = '\0';
 		}
 	}