diff --git a/CMakeLists.txt b/CMakeLists.txt
index 59c09caa1..fe757ffbb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -165,7 +165,7 @@ add_definitions(-DQT_USE_FAST_CONCATENATION -DQT_USE_FAST_OPERATOR_PLUS)
 add_definitions(-DQT_NO_URL_CAST_FROM_STRING)
 
 ################# setup the include directories #################
-include_directories( ${kdeqt5staging_INCLUDE_DIR})
+include_directories( ${kdeqt5staging_INCLUDE_DIRS})
 # for including config.h and for includes like <kparts/foo.h>
 include_directories( ${CMAKE_SOURCE_DIR} ${CMAKE_BINARY_DIR} ${CMAKE_SOURCE_DIR}/interfaces ${CMAKE_SOURCE_DIR}/plasma/includes)