diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1a4daee86ed660468ba467718d0ae62c94d93cf7..ca6abcec9e3aef9531750633fd845ec55f1628bc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -63,6 +63,9 @@ set(Boost_USE_MULTITHREADED ON)
 set(CMAKE_INCLUDE_PATH "${BOOST_INCLUDEDIR} ${CMAKE_CURRENT_LIST_DIR}/external_dependencies/boost ${CMAKE_INCLUDE_PATH}")
 set(CMAKE_LIBRARY_PATH "${BOOST_LIBRARYDIR} ${CMAKE_CURRENT_LIST_DIR}/external_dependencies/boost/stage/lib ${CMAKE_LIBRARY_PATH}")
 
+message("CMAKE_INCLUDE_PATH: ${CMAKE_INCLUDE_PATH}")
+message("CMAKE_LIBRARY_PATH: ${CMAKE_LIBRARY_PATH}")
+
 find_package(
     Boost
 
@@ -73,7 +76,7 @@ find_package(
 )
 
 if(NOT Boost_FOUND)
-    message("Boost was NOT found!")
+    message(FATAL_ERROR "Boost was NOT found! Specify variables BOOST_INCLUDEDIR and BOOST_LIBRARYDIR!")
 endif()
 
 message("Boost_INCLUDE_DIRS: ${Boost_INCLUDE_DIRS}")