diff --git a/validation/advanced-tests/test-run-groovy.groovy b/validation/advanced-tests/test-run-groovy.groovy
index 9ebcbd6a0..84b81be8e 100644
--- a/validation/advanced-tests/test-run-groovy.groovy
+++ b/validation/advanced-tests/test-run-groovy.groovy
@@ -10,7 +10,7 @@
     System.err.println "ERROR: environment variable $name is set, but empty"
     System.exit(100)
   }
-  System.out.println("$name = $val")
+  System.out.println "$name = $val"
 }
 
 // try to import a local package