diff --git a/plugins/GSdx/GSTextureOGL.cpp b/plugins/GSdx/GSTextureOGL.cpp
index 5dcb7bc23a..0501753c6e 100644
--- a/plugins/GSdx/GSTextureOGL.cpp
+++ b/plugins/GSdx/GSTextureOGL.cpp
@@ -44,7 +44,7 @@ namespace PboPool {
 	// XXX: actually does I really need coherent and barrier???
 	// As far as I understand glTexSubImage2D is a client-server transfer so no need to make
 	// the value visible to the server
-	const GLbitfield map_flags = GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT /*| GL_MAP_COHERENT_BIT*/;
+	const GLbitfield map_flags = GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT;
 	// FIXME do I need GL_DYNAMIC_STORAGE_BIT to allow write?
 	const GLbitfield create_flags = map_flags /*| GL_DYNAMIC_STORAGE_BIT*/ | GL_CLIENT_STORAGE_BIT;
 #endif