diff --git a/src/monitor.c b/src/monitor.c
index 337e57e2..7ec1bba7 100644
--- a/src/monitor.c
+++ b/src/monitor.c
@@ -340,8 +340,11 @@ GLFWAPI const GLFWvidmode* glfwGetVideoModes(GLFWmonitor* handle, int* count)
 
     _GLFW_REQUIRE_INIT_OR_RETURN(NULL);
 
-    if (!refreshVideoModes(monitor))
-        return GL_FALSE;
+    if (monitor->modes == NULL)
+    {
+        if (!refreshVideoModes(monitor))
+            return GL_FALSE;
+    }
 
     *count = monitor->modeCount;
     return monitor->modes;