diff --git a/src/window.c b/src/window.c
index 3a3b66dfe..5ce852fba 100644
--- a/src/window.c
+++ b/src/window.c
@@ -252,7 +252,7 @@ GLFWAPI GLFWwindow* glfwCreateWindow(int width, int height,
     return (GLFWwindow*) window;
 }
 
-void glfwDefaultWindowHints(void)
+GLFWAPI void glfwDefaultWindowHints(void)
 {
     _GLFW_REQUIRE_INIT();