diff --git a/dataengine.cpp b/dataengine.cpp
index 81395add1..8286a7bc4 100644
--- a/dataengine.cpp
+++ b/dataengine.cpp
@@ -252,7 +252,7 @@ bool DataEngine::isValid() const
     return d->valid;
 }
 
-bool DataEngine::setValid(bool valid)
+void DataEngine::setValid(bool valid)
 {
     d->valid = valid;
 }
diff --git a/dataengine.h b/dataengine.h
index 76655d87d..e7223158b 100644
--- a/dataengine.h
+++ b/dataengine.h
@@ -223,7 +223,7 @@ class PLASMA_EXPORT DataEngine : public QObject
          *
          * @param valid whether or not the engine is valid
          **/
-        bool setValid(bool valid);
+        void setValid(bool valid);
 
     private Q_SLOTS:
         void checkForUpdates();