diff -urN webkitgtk-2.4.6.orig/Source/WebKit2/WebProcess/soup/WebProcessSoup.cpp webkitgtk-2.4.6/Source/WebKit2/WebProcess/soup/WebProcessSoup.cpp
--- webkitgtk-2.4.6.orig/Source/WebKit2/WebProcess/soup/WebProcessSoup.cpp	2014-09-26 11:40:45.000000000 +0400
+++ webkitgtk-2.4.6/Source/WebKit2/WebProcess/soup/WebProcessSoup.cpp	2014-10-11 20:43:16.687116807 +0400
@@ -110,7 +110,7 @@
     WebCore::memoryCache()->setDeadDecodedDataDeletionInterval(deadDecodedDataDeletionInterval);
     WebCore::pageCache()->setCapacity(pageCacheCapacity);
 
-#if PLATFORM(GTK)
+#if PLATFORM(GTK) && USE(ACCELERATED_COMPOSITING)
     WebCore::pageCache()->setShouldClearBackingStores(true);
 #endif