diff --git a/matlab/simult_.m b/matlab/simult_.m
index 999af80fa45e379d02c7d668fb8e6cfb96962afa..8e6346231157a7a50fd0ba5caa95a762cd1892cd 100644
--- a/matlab/simult_.m
+++ b/matlab/simult_.m
@@ -172,6 +172,6 @@ else
             yhat3 = yhat3(ipred);
         end
       otherwise
-          error(['pruning not available for order = ' int2str(options_.order)])
+          error(['pruning not available for order = ' int2str(iorder)])
     end
 end