diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,12 +26,6 @@
 # C4996: 'function': was declared deprecated
 ENDIF(MSVC)
 
-IF(GLPK_FOUND)
-  SET(HAVE_LP TRUE)
-  SET(HAVE_MIP TRUE)
-  SET(HAVE_GLPK TRUE)
-ENDIF(GLPK_FOUND)
-
 INCLUDE(CheckTypeSize)
 CHECK_TYPE_SIZE("long long" LONG_LONG)
 
diff --git a/cmake/FindGLPK.cmake b/cmake/FindGLPK.cmake
--- a/cmake/FindGLPK.cmake
+++ b/cmake/FindGLPK.cmake
@@ -13,8 +13,15 @@
 FIND_PACKAGE_HANDLE_STANDARD_ARGS(GLPK DEFAULT_MSG GLPK_LIBRARY GLPK_INCLUDE_DIR)
 
 IF(GLPK_FOUND)
+  SET(GLPK_INCLUDE_DIRS ${GLPK_INCLUDE_DIR})
   SET(GLPK_LIBRARIES ${GLPK_LIBRARY})
   SET(GLPK_BIN_DIR ${GLPK_ROOT_PATH}/bin)
 ENDIF(GLPK_FOUND)
 
 MARK_AS_ADVANCED(GLPK_LIBRARY GLPK_INCLUDE_DIR GLPK_BIN_DIR)
+
+IF(GLPK_FOUND)
+  SET(HAVE_LP TRUE)
+  SET(HAVE_MIP TRUE)
+  SET(HAVE_GLPK TRUE)
+ENDIF(GLPK_FOUND)
diff --git a/lemon/CMakeLists.txt b/lemon/CMakeLists.txt
--- a/lemon/CMakeLists.txt
+++ b/lemon/CMakeLists.txt
@@ -20,7 +20,7 @@
 
 IF(HAVE_GLPK)
   SET(LEMON_SOURCES ${LEMON_SOURCES} glpk.cc)
-  INCLUDE_DIRECTORIES(${GLPK_INCLUDE_DIR})
+  INCLUDE_DIRECTORIES(${GLPK_INCLUDE_DIRS})
   IF(WIN32)
     INSTALL(FILES ${GLPK_BIN_DIR}/glpk.dll DESTINATION bin)
     INSTALL(FILES ${GLPK_BIN_DIR}/libltdl3.dll DESTINATION bin)
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -3,10 +3,6 @@
   ${PROJECT_BINARY_DIR}
 )
 
-IF(HAVE_GLPK)
-  INCLUDE_DIRECTORIES(${GLPK_INCLUDE_DIR})
-ENDIF(HAVE_GLPK)
-
 LINK_DIRECTORIES(${PROJECT_BINARY_DIR}/lemon)
 
 SET(TESTS