diff --git a/bin/mpirunDebug b/bin/mpirunDebug
index b7fb377f0f..bd5c8a4c15 100755
--- a/bin/mpirunDebug
+++ b/bin/mpirunDebug
@@ -162,12 +162,14 @@ do
     procCmdFile="$PWD/processor${proc}.sh"
     procLog="processor${proc}.log"
     geom="-geometry 120x20+$xpos+$ypos"
-    node=""
 
-    if [ "$WM_MPLIB" = OPENMPI ]
-    then
+    case "$WM_MPLIB" in
+    *OPENMPI)
         node="-np 1 "
-    fi
+        ;;
+    *)
+        node=""
+    esac
 
     echo "#!/bin/sh" > $procCmdFile
     case "$method" in