diff --git a/test/test_kernel_cache.py b/test/test_kernel_cache.py
index b5d30281e5..851f4d83fd 100644
--- a/test/test_kernel_cache.py
+++ b/test/test_kernel_cache.py
@@ -8,20 +8,22 @@ class TestKernelCache(unittest.TestCase):
     if Device.DEFAULT not in ["CLANG"]:
       self.skipTest("No custom kernel cache is implemented")
 
-    a = Tensor.rand(4,4)
-    b = Tensor.rand(4,4)
-    x = a + b
+    unique_const = 0.6765677269
+    a = Tensor.rand(4,4).realize()
+    b = Tensor.rand(4,4).realize()
+    x = a + b + unique_const
     x.realize()
 
+    a1 = Tensor.rand(4,4).realize()
+    b1 = Tensor.rand(4,4).realize()
     orig_compile_func = Device['CLANG'].compiler
     Device['CLANG'].compiler = None # making it not callable
 
-    a1 = Tensor.rand(4,4)
-    b1 = Tensor.rand(4,4)
-    x1 = a1 + b1
-    x1.realize() # Same kernel should be from cache.
-
-    Device['CLANG'].compiler = orig_compile_func
+    try:
+      x1 = a1 + b1 + unique_const
+      x1.realize() # Same kernel should be from cache.
+    finally:
+      Device['CLANG'].compiler = orig_compile_func
 
 if __name__ == "__main__":
   unittest.main()