diff --git a/src/kauthaction.cpp b/src/kauthaction.cpp
--- a/src/kauthaction.cpp
+++ b/src/kauthaction.cpp
@@ -24,6 +24,7 @@
 
 class QWidget;
 
+#include "kauthdebug.h"
 #include "kauthexecutejob.h"
 
 #include "BackendsManager.h"
@@ -121,10 +122,14 @@
     if (BackendsManager::authBackend()->capabilities() & KAuth::AuthBackend::CheckActionExistenceCapability) {
         // In this case, just ask the backend
         d->valid = BackendsManager::authBackend()->actionExists(name);
+        if (!d->valid)
+            qCWarning(KAUTH) << "Backend does not recognize action: " << name;
     } else {
         // Otherwise, check through a regexp
         QRegExp exp(QLatin1String("[0-z]+(\\.[0-z]+)*"));
         d->valid = exp.exactMatch(name);
+        if (!d->valid)
+            qCWarning(KAUTH) << "Action has an invalid name: " << name;
     }
 }