diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7f61dc1..4ec5dea 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,7 @@ project(GCTL_GRAPHIC VERSION 1.0)
 include(CMakePackageConfigHelpers)
 
 option(GCTL_GRAPHIC_GMT "Use the GMT library" ON)
-option(GCTL_GRAPHIC_MATHGL "Use the MathGL2 library" ON)
+option(GCTL_GRAPHIC_MATHGL "Use the MathGL2 library" OFF)
 
 message(STATUS "Platform: " ${CMAKE_HOST_SYSTEM_NAME})
 message(STATUS "Install prefix: " ${CMAKE_INSTALL_PREFIX})
diff --git a/lib/graphic/gctl_graphic_config.h b/lib/graphic/gctl_graphic_config.h
index 9042f93..2bad89f 100644
--- a/lib/graphic/gctl_graphic_config.h
+++ b/lib/graphic/gctl_graphic_config.h
@@ -1,2 +1,2 @@
 #define GCTL_GRAPHIC_GMT
-#define GCTL_GRAPHIC_MATHGL
+/* #undef GCTL_GRAPHIC_MATHGL */