diff --git a/pact-core-tests/pact-tests/namespaces.repl b/pact-core-tests/pact-tests/namespaces.repl
index 2f60b19fd..c36fa88be 100644
--- a/pact-core-tests/pact-tests/namespaces.repl
+++ b/pact-core-tests/pact-tests/namespaces.repl
@@ -278,7 +278,7 @@
 
 (begin-tx)
 
-(env-exec-config [])
+(env-exec-config ['RequireKeysetNs])
 
 (expect
   "Setting namespace back to root namespace post-Pact 4.7 fork succeeds"