diff --git a/README.md b/README.md
index 3a269d40..5e16933e 100644
--- a/README.md
+++ b/README.md
@@ -135,6 +135,7 @@ information on what to include when reporting a bug.
  - [X11] Bugfix: Keys pressed simultaneously with others were not always
    reported (#1112,#1415,#1472,#1616)
  - [Wayland] Bugfix: Repeated keys could be reported with `NULL` window (#1704)
+ - [Wayland] Bugfix: Retrieving partial framebuffer size would segfault
 
 
 ## Contact
diff --git a/src/wl_window.c b/src/wl_window.c
index 0cc725a5..f811fffc 100644
--- a/src/wl_window.c
+++ b/src/wl_window.c
@@ -1118,8 +1118,10 @@ void _glfwPlatformGetFramebufferSize(_GLFWwindow* window,
                                      int* width, int* height)
 {
     _glfwPlatformGetWindowSize(window, width, height);
-    *width *= window->wl.scale;
-    *height *= window->wl.scale;
+    if (width)
+        *width *= window->wl.scale;
+    if (height)
+        *height *= window->wl.scale;
 }
 
 void _glfwPlatformGetWindowFrameSize(_GLFWwindow* window,