diff --git a/CMakeLists.txt b/CMakeLists.txt
index b5b58f6..17eaed8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -49,7 +49,7 @@ find_package(KF5WindowSystem ${KF_DEP_VERSION} REQUIRED)
 
 # no X11 stuff on mac
 if (NOT APPLE)
-    find_package(XCB MODULE COMPONENTS XCB KEYSYMS XTEST XKB)
+    find_package(XCB MODULE COMPONENTS XCB KEYSYMS XKB OPTIONAL_COMPONENTS XTEST)
     set_package_properties(XCB PROPERTIES DESCRIPTION "X protocol C-language Binding"
                        URL "http://xcb.freedesktop.org"
                        TYPE OPTIONAL