diff --git a/cleanW10.ps1 b/cleanW10.ps1
index e00c84d..f2121c9 100755
--- a/cleanW10.ps1
+++ b/cleanW10.ps1
@@ -486,17 +486,26 @@ function ProcessModuleFile {
         foreach( $p in $_.psobject.properties.name ){
             $current_action[$p] = $_.$p
         }
+        if ( -not  $current_action.ContainsKey('action') ) {
+             Write-Host -ForegroundColor Red "`tError : action not found"
+             return
+        }
         # If action content a file element, need to test if file exist
         if ( $current_action.ContainsKey('file')) {
               $action_file = $(Get-ChildItem $path).DirectoryName + "\" +  $(Get-ChildItem $path).BaseName + "\" + $current_action.file
             if ( -not (Test-Path $action_file) ) {
-                Write-Host -ForegroundColor Red "`tError in $($mod.name) : file $action_file not found"
+                Write-Host -ForegroundColor Red "`tError in $($mod.name) : file $action_file not found`n"
                 return
             }
             $current_action.file = $action_file
         }
         # Invoke function
-        Invoke-Expression "$($_.action) `$current_action"
+        if (Get-Command $($_.action) -ErrorAction SilentlyContinue ){
+            Invoke-Expression "$($_.action) `$current_action"
+        }
+        else {
+            Write-Host -ForegroundColor Red "`tError in $($mod.name) : action $($_.action) not exist"
+        }
     }
 }