diff --git a/engine/common/com_mesh.c b/engine/common/com_mesh.c
index 044ff47d..9b641218 100644
--- a/engine/common/com_mesh.c
+++ b/engine/common/com_mesh.c
@@ -8,12 +8,13 @@
 #include "glquake.h"
 #endif
 
-
-
-
 #include "com_mesh.h"
 
-
+#ifdef _WIN32
+#include <malloc.h>
+#else
+#include <alloca.h>
+#endif
 
 extern cvar_t gl_part_flame, r_fullbrightSkins, r_fb_models;
 extern cvar_t r_noaliasshadows;
diff --git a/engine/gl/gl_alias.c b/engine/gl/gl_alias.c
index b851007d..19ef35a9 100644
--- a/engine/gl/gl_alias.c
+++ b/engine/gl/gl_alias.c
@@ -27,6 +27,12 @@
 #include <stdlib.h>
 #endif
 
+#ifdef _WIN32
+#include <malloc.h>
+#else
+#include <alloca.h>
+#endif
+
 #define MAX_BONES 256
 
 #ifndef SERVERONLY