diff --git a/polymer/eduke32/build/include/build.h b/polymer/eduke32/build/include/build.h
index 81f4595a8..8cc08eff3 100644
--- a/polymer/eduke32/build/include/build.h
+++ b/polymer/eduke32/build/include/build.h
@@ -402,7 +402,7 @@ typedef struct {
 extern palette_t curpalette[256], curpalettefaded[256], palfadergb;
 extern char palfadedelta;
 
-extern int32_t dommxoverlay, novoxmips;
+extern int32_t novoxmips;
 
 extern float debug1, debug2;
 
diff --git a/polymer/eduke32/build/src/engine.c b/polymer/eduke32/build/src/engine.c
index 45b619ccd..9c482ee69 100644
--- a/polymer/eduke32/build/src/engine.c
+++ b/polymer/eduke32/build/src/engine.c
@@ -104,7 +104,8 @@ static int32_t lowrecip[1024], nytooclose, nytoofar;
 static uint32_t distrecip[65536+256];
 
 static intptr_t *lookups = NULL;
-int32_t dommxoverlay = 1, beforedrawrooms = 1, indrawroomsandmasks = 0;
+static int32_t dommxoverlay = 1, beforedrawrooms = 1;
+int32_t indrawroomsandmasks = 0;
 
 static int32_t oxdimen = -1, oviewingrange = -1, oxyaspect = -1;