diff --git a/kstyle/CMakeLists.txt b/kstyle/CMakeLists.txt
index bf7fe027..52128d6d 100644
--- a/kstyle/CMakeLists.txt
+++ b/kstyle/CMakeLists.txt
@@ -24,6 +24,7 @@ if(BREEZE_USE_KDE4)
   include_directories(${KDE4_INCLUDES})
 
   ### XCB
+  find_package(PkgConfig REQUIRED)
   pkg_check_modules(XCB xcb x11-xcb)
   set(BREEZE_HAVE_X11 ${XCB_FOUND})