diff --git a/scripts/build.pl b/scripts/build.pl
index c651979..3805954 100755
--- a/scripts/build.pl
+++ b/scripts/build.pl
@@ -193,10 +193,11 @@ local $ENV{WAMR_USE_LINEAR_POOL_IN_TEXT} =
 # Select FAIL catch flags (written to runner_flags in each build dir)
 # ========================================================================================= #
 
+# NOTE: The runner will prefix "-Wf," to each flag
 my %catch_flag_map = (
     "--catch-outer"     => "--catch-outerspace",
     "--catch-text"      => "--catch-write-textsegment",
-    "--wamr-exceptions" => "-Wf,--group1-marker=fail_marker_group1",
+    "--wamr-exceptions" => "--group1-marker=fail_marker_group1",
 );
 my @selected_catch_flags;
 if ( grep { $_ eq "fail" } @selected_targets ) {