diff --git a/activation.cpp b/activation.cpp
index a1eddf6dd9..b3216cbf43 100644
--- a/activation.cpp
+++ b/activation.cpp
@@ -861,6 +861,8 @@ void Client::setActive( bool act )
     if ( active == act )
         return;
     active = act;
+    const int ruledOpacity = active ? rules()->checkOpacityActive(opacity()*100) : rules()->checkOpacityInactive(opacity()*100);
+    setOpacity( ruledOpacity/100.0 );
     workspace()->setActiveClient( act ? this : NULL, Allowed );
     
     if ( active )
diff --git a/effects.cpp b/effects.cpp
index 65a39b730d..9b5653df90 100644
--- a/effects.cpp
+++ b/effects.cpp
@@ -210,6 +210,8 @@ void EffectsHandlerImpl::windowUserMovedResized( EffectWindow* c, bool first, bo
 
 void EffectsHandlerImpl::windowOpacityChanged( EffectWindow* c, double old_opacity )
     {
+        if (!c)
+            return;
     if( static_cast<EffectWindowImpl*>(c)->window()->opacity() == old_opacity )
         return;
     foreach( const EffectPair &ep, loaded_effects )
diff --git a/rules.cpp b/rules.cpp
index d34ec8eec5..b79bd1ab07 100644
--- a/rules.cpp
+++ b/rules.cpp
@@ -853,7 +853,12 @@ void Client::applyWindowRules()
     setShortcut( rules()->checkShortcut( shortcut().toString()));
     // see also Client::setActive()
     if( isActive())
+        {
+        setOpacity( rules()->checkOpacityActive(opacity()*100)/100.0 );
         workspace()->disableGlobalShortcutsForClient( rules()->checkDisableGlobalShortcuts( false ));
+        }
+    else
+        setOpacity( rules()->checkOpacityInactive(opacity()*100)/100.0 );
     }
 
 void Client::updateWindowRules()