diff --git a/scripts/chwd b/scripts/chwd
index a4a71ce..37768ed 100755
--- a/scripts/chwd
+++ b/scripts/chwd
@@ -106,6 +106,11 @@ local function remove(packages)
 end
 
 local function exec_hook(hook)
+    if not hook then
+        print("WARNING: An unknown hook is being called")
+        return
+    end
+
     if hook ~= "" then
         local file = io.popen(("/bin/bash -c '%s'"):format(hook), "r")
 
@@ -116,8 +121,6 @@ local function exec_hook(hook)
         else
             print("ERROR: Unkown shell invocation error", hook)
         end
-    else
-        print("WARNING: An unknown hook is being called")
     end
 end