diff --git a/src/Renderer/Blitter.cpp b/src/Renderer/Blitter.cpp
index aaf1c89..f3b9ab6 100644
--- a/src/Renderer/Blitter.cpp
+++ b/src/Renderer/Blitter.cpp
@@ -16,6 +16,8 @@
 
 namespace sw
 {
+	Blitter blitter;
+
 	Blitter::Blitter()
 	{
 		blitCache = new RoutineCache<BlitState>(1024);
@@ -400,6 +402,7 @@
 		state.destFormat = dest->getInternalFormat();
 		state.filter = filter;
 
+		criticalSection.lock();
 		Routine *blitRoutine = blitCache->query(state);
 		
 		if(!blitRoutine)
@@ -408,12 +411,15 @@
 
 			if(!blitRoutine)
 			{
+				criticalSection.unlock();
 				return false;
 			}
 
 			blitCache->add(state, blitRoutine);
 		}
 
+		criticalSection.unlock();
+
 		void (*blitFunction)(const BlitData *data) = (void(*)(const BlitData*))blitRoutine->getEntry();
 
 		BlitData data;
diff --git a/src/Renderer/Blitter.hpp b/src/Renderer/Blitter.hpp
index 6c20ecb..ca7ec66 100644
--- a/src/Renderer/Blitter.hpp
+++ b/src/Renderer/Blitter.hpp
@@ -69,7 +69,10 @@
 		Routine *generate(BlitState &state);
 
 		RoutineCache<BlitState> *blitCache;
+		BackoffLock criticalSection;
 	};
+
+	extern Blitter blitter;
 }
 
 #endif   // sw_Blitter_hpp
diff --git a/src/Renderer/Renderer.hpp b/src/Renderer/Renderer.hpp
index 5b64563..894b4e0 100644
--- a/src/Renderer/Renderer.hpp
+++ b/src/Renderer/Renderer.hpp
@@ -442,8 +442,6 @@
 		VertexProcessor::State vertexState;
 		SetupProcessor::State setupState;
 		PixelProcessor::State pixelState;
-
-		Blitter blitter;
 	};
 }