diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -216,7 +216,7 @@
 endif(NOT APPS_INSTALL_DIR)
 
 if(NOT INCLUDE_INSTALL_DIR)
-    set(INCLUDE_INSTALL_DIR "${CMAKE_INSTALL_PREFIX}/include")
+    set(INCLUDE_INSTALL_DIR "include")
 endif()
 
 if (NOT MARBLE_DATA_PATH)