Index: src/webkit_server.pro
--- src/webkit_server.pro.orig
+++ src/webkit_server.pro
@@ -196,7 +196,7 @@ lessThan(QT_MAJOR_VERSION, 5) {
     error(At least Qt 4.8.0 is required to run capybara-webkit.)
   }
 }
-CONFIG += console precompile_header
+CONFIG += console
 CONFIG -= app_bundle
 PRECOMPILED_HEADER = stable.h