diff --git a/tests/gem5/test_build/test_build.py b/tests/gem5/test_build/test_build.py
index 3a6a534601..715b129a3a 100644
--- a/tests/gem5/test_build/test_build.py
+++ b/tests/gem5/test_build/test_build.py
@@ -32,9 +32,10 @@ import os
 from testlib import *
 
 common_isas = [constants.gcn3_x86_tag, constants.arm_tag, constants.riscv_tag]
+skipped_isas = {constants.null_tag, constants.all_compiled_tag}
 
 for isa in constants.supported_isas:
-    if isa is constants.null_tag: continue
+    if isa in skipped_isas: continue
 
     for variant in constants.supported_variants:
         if isa in common_isas: