diff --git a/NPSimulation/ressources/scripts/bringtofront.osa b/NPSimulation/ressources/scripts/bringtofront.osa
index f81cd0c7667ccb1bbc2583ca87ba9567d69e1145..7efe98271e9917f7b92c616a996ba0e6b6204444 100644
--- a/NPSimulation/ressources/scripts/bringtofront.osa
+++ b/NPSimulation/ressources/scripts/bringtofront.osa
@@ -1,5 +1,7 @@
 tell application "Finder"
-  tell process "npsimulation"
-    set frontmost to true
-  end tell
+  if process "npsimulation" is running then
+    tell process "npsimulation"
+      set frontmost to true
+    end tell
+  end if
 end tell