diff --git a/src/null_window.c b/src/null_window.c
index 7f0101d44..3ca26f292 100644
--- a/src/null_window.c
+++ b/src/null_window.c
@@ -184,6 +184,10 @@ void _glfwPlatformFocusWindow(_GLFWwindow* window)
 {
 }
 
+void _glfwPlatformDragWindow(_GLFWwindow* window)
+{
+}
+
 int _glfwPlatformWindowFocused(_GLFWwindow* window)
 {
     return GLFW_FALSE;
diff --git a/src/win32_window.c b/src/win32_window.c
index 363ef0f32..487376979 100644
--- a/src/win32_window.c
+++ b/src/win32_window.c
@@ -1323,6 +1323,12 @@ void _glfwPlatformFocusWindow(_GLFWwindow* window)
     SetFocus(window->win32.handle);
 }
 
+void _glfwPlatformDragWindow(_GLFWwindow* window)
+{
+    ReleaseCapture();
+    SendMessage(window->win32.handle, WM_NCLBUTTONDOWN, HTCAPTION, 0);
+}
+
 void _glfwPlatformSetWindowMonitor(_GLFWwindow* window,
                                    _GLFWmonitor* monitor,
                                    int xpos, int ypos,