diff --git a/images/themes/default/mAction.svg b/images/themes/default/mAction.svg
diff --git a/images/themes/default/propertyicons/action.png b/images/themes/default/propertyicons/action.png
diff --git a/images/themes/default/propertyicons/action.svg b/images/themes/default/propertyicons/action.svg
diff --git a/src/app/qgisapp.cpp b/src/app/qgisapp.cpp
@@ -1754,7 +1754,7 @@ void QgisApp::setTheme( QString theThemeName )
   mActionZoomToLayer->setIcon( QgsApplication::getThemeIcon( "/mActionZoomToLayer.png" ) );
   mActionZoomActualSize->setIcon( QgsApplication::getThemeIcon( "/mActionZoomActual.png" ) );
   mActionIdentify->setIcon( QgsApplication::getThemeIcon( "/mActionIdentify.svg" ) );
-  mActionFeatureAction->setIcon( QgsApplication::getThemeIcon( "/mAction.png" ) );
+  mActionFeatureAction->setIcon( QgsApplication::getThemeIcon( "/mAction.svg" ) );
   mActionSelect->setIcon( QgsApplication::getThemeIcon( "/mActionSelect.png" ) );
   mActionSelectRectangle->setIcon( QgsApplication::getThemeIcon( "/mActionSelectRectangle.png" ) );
   mActionSelectPolygon->setIcon( QgsApplication::getThemeIcon( "/mActionSelectPolygon.svg" ) );

diff --git a/src/app/qgsidentifyresultsdialog.cpp b/src/app/qgsidentifyresultsdialog.cpp
@@ -439,7 +439,7 @@ void QgsIdentifyResultsDialog::addFeature( QgsVectorLayer *vlayer, const QgsFeat
         continue;
 
       QTreeWidgetItem *twi = new QTreeWidgetItem( QStringList() << "" << action.name() );
-      twi->setIcon( 0, QgsApplication::getThemeIcon( "/mAction.png" ) );
+      twi->setIcon( 0, QgsApplication::getThemeIcon( "/mAction.svg" ) );
       twi->setData( 0, Qt::UserRole, "action" );
       twi->setData( 0, Qt::UserRole + 1, QVariant::fromValue( i ) );
       actionItem->addChild( twi );
@@ -769,7 +769,7 @@ void QgsIdentifyResultsDialog::contextMenuEvent( QContextMenuEvent* event )
         continue;
 
       QgsFeatureAction *a = new QgsFeatureAction( action.name(), mFeatures[ featIdx ], vlayer, i, idx, this );
-      mActionPopup->addAction( QgsApplication::getThemeIcon( "/mAction.png" ), action.name(), a, SLOT( execute() ) );
+      mActionPopup->addAction( QgsApplication::getThemeIcon( "/mAction.svg" ), action.name(), a, SLOT( execute() ) );
     }
   }
 

diff --git a/src/ui/qgisapp.ui b/src/ui/qgisapp.ui
@@ -1676,7 +1676,7 @@ Ctl (Cmd) increments by 15 deg.</string>
    </property>
    <property name="icon">
     <iconset resource="../../images/images.qrc">
-     <normaloff>:/images/themes/default/mAction.png</normaloff>:/images/themes/default/mAction.png</iconset>
+     <normaloff>:/images/themes/default/mAction.svg</normaloff>:/images/themes/default/mAction.svg</iconset>
    </property>
    <property name="text">
     <string>Feature Action</string>

diff --git a/src/ui/qgsoptionsbase.ui b/src/ui/qgsoptionsbase.ui
@@ -101,7 +101,7 @@
           </property>
           <property name="icon">
            <iconset resource="../../images/images.qrc">
-            <normaloff>:/images/themes/default/propertyicons/action.png</normaloff>:/images/themes/default/propertyicons/action.png</iconset>
+            <normaloff>:/images/themes/default/propertyicons/action.svg</normaloff>:/images/themes/default/propertyicons/action.svg</iconset>
           </property>
          </item>
          <item>

diff --git a/src/ui/qgsprojectpropertiesbase.ui b/src/ui/qgsprojectpropertiesbase.ui
@@ -149,7 +149,7 @@
           </property>
           <property name="icon">
            <iconset resource="../../images/images.qrc">
-            <normaloff>:/images/themes/default/propertyicons/action.png</normaloff>:/images/themes/default/propertyicons/action.png</iconset>
+            <normaloff>:/images/themes/default/propertyicons/action.svg</normaloff>:/images/themes/default/propertyicons/action.svg</iconset>
           </property>
          </item>
         </widget>

diff --git a/src/ui/qgsrasterhistogramwidgetbase.ui b/src/ui/qgsrasterhistogramwidgetbase.ui
@@ -301,7 +301,7 @@
             </property>
             <property name="icon">
              <iconset resource="../../images/images.qrc">
-              <normaloff>:/images/themes/default/mAction.png</normaloff>:/images/themes/default/mAction.png</iconset>
+              <normaloff>:/images/themes/default/mAction.svg</normaloff>:/images/themes/default/mAction.svg</iconset>
             </property>
             <property name="popupMode">
              <enum>QToolButton::InstantPopup</enum>

diff --git a/src/ui/qgsvectorlayerpropertiesbase.ui b/src/ui/qgsvectorlayerpropertiesbase.ui
@@ -165,7 +165,7 @@
           </property>
           <property name="icon">
            <iconset resource="../../images/images.qrc">
-            <normaloff>:/images/themes/default/propertyicons/action.png</normaloff>:/images/themes/default/propertyicons/action.png</iconset>
+            <normaloff>:/images/themes/default/propertyicons/action.svg</normaloff>:/images/themes/default/propertyicons/action.svg</iconset>
           </property>
          </item>
          <item>