diff --git a/pkg/freetype/build.zig b/pkg/freetype/build.zig
index c4cf4690c..04840624e 100644
--- a/pkg/freetype/build.zig
+++ b/pkg/freetype/build.zig
@@ -89,7 +89,7 @@ pub fn buildFreetype(
         "-DHAVE_UNISTD_H",
         "-DHAVE_FCNTL_H",
 
-        //"-fno-sanitize=undefined",
+        "-fno-sanitize=undefined",
     });
     if (opt.libpng.enabled) try flags.append("-DFT_CONFIG_OPTION_USE_PNG=1");
     if (opt.zlib.enabled) try flags.append("-DFT_CONFIG_OPTION_SYSTEM_ZLIB=1");