diff --git a/vars/pgrep_port_forward.groovy b/vars/pgrep_port_forward.groovy
index 68c5e5a..0862aef 100644
--- a/vars/pgrep_port_forward.groovy
+++ b/vars/pgrep_port_forward.groovy
@@ -58,7 +58,7 @@
         '--list-full',
         '--full',  // hmmm: conditional use (?)
         "'${proc}",
-    ]
+    ].join(' ')
 
     print("""
 ** -----------------------------------------------------------------------