diff --git a/engine/client/r_2d.c b/engine/client/r_2d.c
index 61978cd7a..6c6f20f42 100644
--- a/engine/client/r_2d.c
+++ b/engine/client/r_2d.c
@@ -903,6 +903,7 @@ void QDECL R2D_Conback_Callback(struct cvar_s *var, char *oldvalue)
 }
 
 #if defined(_WIN32) && !defined(FTE_SDL) && !defined(WINRT) && !defined(_XBOX)
+#include <windows.h>
 qboolean R2D_Font_WasAdded(char *buffer, char *fontfilename)
 {
 	char *match;
diff --git a/engine/gl/gl_model.c b/engine/gl/gl_model.c
index e672a29e3..f74ac0ea8 100644
--- a/engine/gl/gl_model.c
+++ b/engine/gl/gl_model.c
@@ -266,6 +266,9 @@ static void Mod_BlockTextureColour_f (void)
 
 #ifdef RUNTIMELIGHTING
 #if defined(MULTITHREAD)
+#ifdef _WIN32
+#include <windows.h>
+#endif
 static void *relightthread[8];
 static unsigned int relightthreads;
 static volatile qboolean wantrelight;