diff --git a/src/app/crbeam/CMakeLists.txt b/src/app/crbeam/CMakeLists.txt
index 66f9d7ac8ba7c9bb7b09ae33b20c3c19568efd10..3ec4fff3ad934ade4c57c4bb51f64737b0e2a0cc 100644
--- a/src/app/crbeam/CMakeLists.txt
+++ b/src/app/crbeam/CMakeLists.txt
@@ -4,7 +4,7 @@ project (CRbeam)
 #set(CMAKE_VERBOSE_MAKEFILE ON)
 add_definitions(-DUSE_GSL)
 
-include_directories ("../../lib" "../../OS/include")
+include_directories ("../../lib" "../../OS/include" "../../../OS/include")
 
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fopenmp")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fopenmp")
diff --git a/src/lib/CMakeLists.txt b/src/lib/CMakeLists.txt
index c45cf54ea9a5dfff13c3098126f8131861e9bb3c..f2065de7528127a8466d1f234b3ba75203eeb781 100644
--- a/src/lib/CMakeLists.txt
+++ b/src/lib/CMakeLists.txt
@@ -33,7 +33,7 @@ endif (Fortran_COMPILER_NAME MATCHES "gfortran.*")
 
 
 add_definitions(-DUSE_GSL)
-include_directories(../OS/include ../external)
+include_directories(../OS/include ../../OS/include ../external)
 
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fopenmp")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fopenmp")