1 files changed, 1 insertions, 0 deletions
diff --git a/tests/runner.py b/tests/runner.py
index 9e1e6707..159cec16 100755
--- a/tests/runner.py
+++ b/tests/runner.py
@@ -14951,6 +14951,7 @@ fi
         assert not os.path.exists(EMCC_CACHE)
       finally:
         if old: os.environ['LLVM'] = old
+        else: del os.environ['LLVM']
 
       try_delete(CANONICAL_TEMP_DIR)