diff --git a/tools/quake3/common/cmdlib.cpp b/tools/quake3/common/cmdlib.cpp
index e2abbc07..8a957fb4 100644
--- a/tools/quake3/common/cmdlib.cpp
+++ b/tools/quake3/common/cmdlib.cpp
@@ -37,6 +37,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <time.h>
+#include <errno.h>
 
 #ifdef WIN32
 #include <direct.h>