diff --git a/polymer/eduke32/source/osdcmds.c b/polymer/eduke32/source/osdcmds.c
index 2e4522b3c..9b56419c1 100644
--- a/polymer/eduke32/source/osdcmds.c
+++ b/polymer/eduke32/source/osdcmds.c
@@ -36,6 +36,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 #include <ctype.h>
 #include <limits.h>
+#include <math.h>
 #include "enet/enet.h"
 
 extern int32_t voting, g_doQuickSave;