diff --git a/include/dongle.cpp b/include/dongle.cpp
index 62c66bcff..541b6d97e 100755
--- a/include/dongle.cpp
+++ b/include/dongle.cpp
@@ -1165,14 +1165,18 @@ int Tdninst::test_cmdline(const TString& cmdline, bool key_must_exist, TString&
   } 
 
   const TString4 strmod = cmdline.left(2);
-  const word codmod = don.module_name2code(strmod);
-  if (codmod == BAAUT)
-    return 0;
+  const int space_pos = cmdline.find(' ');
+  if (space_pos < 0 || space_pos == 3)
+  { 
+    const word codmod = don.module_name2code(strmod);
+    if (codmod == BAAUT)
+      return 0;
 
-  if (!don.active(codmod))
-  {
-    msg << TR("Modulo non attivo sulla chiave: ") << strmod;
-    return 2;
+    if (!don.active(codmod))
+    {
+      msg << TR("Modulo non attivo sulla chiave: ") << strmod;
+      return 2;
+    }
   }
 
   const TDate oggi(TODAY);