diff --git a/src/platform.h b/src/platform.h
index 435674e5..67953331 100644
--- a/src/platform.h
+++ b/src/platform.h
@@ -208,6 +208,7 @@
 #endif
 
 #if defined(_GLFW_WAYLAND) || defined(_GLFW_X11)
+ #include "posix_poll.h"
  #define GLFW_BUILD_POSIX_POLL
 #endif
 
diff --git a/src/wl_platform.h b/src/wl_platform.h
index c9d1c251..d03ba1da 100644
--- a/src/wl_platform.h
+++ b/src/wl_platform.h
@@ -42,8 +42,6 @@ typedef struct VkWaylandSurfaceCreateInfoKHR
 typedef VkResult (APIENTRY *PFN_vkCreateWaylandSurfaceKHR)(VkInstance,const VkWaylandSurfaceCreateInfoKHR*,const VkAllocationCallbacks*,VkSurfaceKHR*);
 typedef VkBool32 (APIENTRY *PFN_vkGetPhysicalDeviceWaylandPresentationSupportKHR)(VkPhysicalDevice,uint32_t,struct wl_display*);
 
-#include "posix_poll.h"
-
 typedef int (* PFN_wl_display_flush)(struct wl_display* display);
 typedef void (* PFN_wl_display_cancel_read)(struct wl_display* display);
 typedef int (* PFN_wl_display_dispatch_pending)(struct wl_display* display);
diff --git a/src/x11_platform.h b/src/x11_platform.h
index 1bfeaab4..36dfcce1 100644
--- a/src/x11_platform.h
+++ b/src/x11_platform.h
@@ -453,7 +453,6 @@ typedef VkResult (APIENTRY *PFN_vkCreateXcbSurfaceKHR)(VkInstance,const VkXcbSur
 typedef VkBool32 (APIENTRY *PFN_vkGetPhysicalDeviceXcbPresentationSupportKHR)(VkPhysicalDevice,uint32_t,xcb_connection_t*,xcb_visualid_t);
 
 #include "xkb_unicode.h"
-#include "posix_poll.h"
 
 #define GLFW_X11_WINDOW_STATE           _GLFWwindowX11 x11;
 #define GLFW_X11_LIBRARY_WINDOW_STATE   _GLFWlibraryX11 x11;