diff --git a/gcc/testsuite/lib/hwasan-dg.exp b/gcc/testsuite/lib/hwasan-dg.exp
index 76057502ee6..8d66b4db3e3 100644
--- a/gcc/testsuite/lib/hwasan-dg.exp
+++ b/gcc/testsuite/lib/hwasan-dg.exp
@@ -119,6 +119,8 @@ proc hwasan_init { args } {
 
     if [istarget x86_64-*-*] {
       set target_hwasan_flags "-mlam=u57"
+    } else {
+      set target_hwasan_flags ""
     }
 
     set link_flags ""