diff --git a/CMakeLists.txt b/CMakeLists.txt
index 63631a5..1459c98 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -36,6 +36,7 @@ include_directories( ${OPENGL_INCLUDE_DIR} )
 include_directories( ${GLEW_INCLUDE_DIRS} )
 include_directories( ${GLM_INCLUDE_DIRS} )
 include_directories( ${GLUT_INCLUDE_DIR} )
+include_directories( ${LIBZIP_INCLUDE_DIR} )
 include_directories( ${PROJECT_SOURCE_DIR}/src )
 configure_file( ${PROJECT_SOURCE_DIR}/src/config.hpp.in ${PROJECT_SOURCE_DIR}/src/config.hpp @ONLY )
 file( 
diff --git a/cmake/FindFreeGLUT.cmake b/cmake/FindFreeGLUT.cmake
index 9f39a34..988de53 100644
--- a/cmake/FindFreeGLUT.cmake
+++ b/cmake/FindFreeGLUT.cmake
@@ -1,4 +1,4 @@
-find_path( GLUT_INCLUDE_DIR NAMES zip.h )
+find_path( GLUT_INCLUDE_DIR NAMES glut.h freeglut.h PATHS /usr/include/GL )
 
 find_library( GLUT_LIBRARY NAMES glut PATHS /usr/lib /usr/lib64 /lib /lib64 /usr/local/lib )