diff --git a/CMakeLists.txt b/CMakeLists.txt
index adba506c2cca2aa4dd9a3d5fcd5e523a517d5332..ebae7a6be1d4548eeddb6445ac8b6b9f7bb23c3c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -35,6 +35,7 @@ if(EXISTS "${CMAKE_CURRENT_LIST_DIR}/custom_variables.cmake")
 endif()
 
 set(CMAKE_PREFIX_PATH "${CMAKE_SOURCE_DIR}/cmake")
+set(KUMIR2_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")
 find_package(Kumir2 REQUIRED)
 
 include_directories("${CMAKE_SOURCE_DIR}/include")