diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 980e872..fbcd0b1 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -95,7 +95,7 @@ endif()
 
 # Make sure linking to the target adds dbusmenu-qt install directory
 target_include_directories(dbusmenu-${QT_SUFFIX}
-    INTERFACE "$<INSTALL_INTERFACE:${INCLUDE_INSTALL_DIR}>")
+    INTERFACE "$<INSTALL_INTERFACE:${CMAKE_INSTALL_PREFIX}/${INCLUDE_INSTALL_DIR}>")
 
 install(TARGETS dbusmenu-${QT_SUFFIX}
     EXPORT dbusmenu-${QT_SUFFIX}-targets