diff --git a/src/sdl2/video.rs b/src/sdl2/video.rs
index e37d483b..aa2119a3 100644
--- a/src/sdl2/video.rs
+++ b/src/sdl2/video.rs
@@ -164,7 +164,7 @@ pub mod ll {
         pub fn SDL_EnableScreenSaver();
         pub fn SDL_DisableScreenSaver();
         pub fn SDL_GL_LoadLibrary(path: *c_char) -> c_int;
-        pub fn SDL_GL_GetProcAddress(procname: *c_char) -> Option<extern "C" fn()>;
+        pub fn SDL_GL_GetProcAddress(procname: *c_char) -> Option<extern "system" fn()>;
         pub fn SDL_GL_UnloadLibrary();
         pub fn SDL_GL_ExtensionSupported(extension: *c_char) -> SDL_bool;
         pub fn SDL_GL_SetAttribute(attr: SDL_GLattr, value: c_int) -> c_int;
@@ -757,7 +757,7 @@ pub fn gl_unload_library() {
     unsafe { ll::SDL_GL_UnloadLibrary(); }
 }
 
-pub fn gl_get_proc_address(procname: &str) -> Option<extern "C" fn()> {
+pub fn gl_get_proc_address(procname: &str) -> Option<extern "system" fn()> {
     unsafe {
         procname.with_c_str(|procname| {
             ll::SDL_GL_GetProcAddress(procname)