diff --git a/config.cpp b/config.cpp
index ec756104..508ec2a0 100644
--- a/config.cpp
+++ b/config.cpp
@@ -1100,7 +1100,7 @@ void showStereo() {
         ) + "\n\n";
 
     if(uni == 'm')
-      { stereo::mode = stereo::eStereo((1 + stereo::mode) % 3); return; }
+      { stereo::mode = stereo::eStereo((1 + stereo::mode) % (CAP_ODS ? 4 : 3)); return; }
     
     else if(uni == 'e') 
       dialog::editNumber(stereo::ipd, -10, 10, 0.01, 0, XLAT("pupillary distance"),
diff --git a/hyper.h b/hyper.h
index 67ec4ff9..13195bfe 100644
--- a/hyper.h
+++ b/hyper.h
@@ -754,9 +754,6 @@ namespace rug {
   extern int  texturesize;
   extern ld   model_distance;
   extern transmatrix currentrot;
-#if CAP_ODS
-  extern bool ods;
-#endif
 #if CAP_RUG
   void show();
   void init();