diff --git a/matlab/simult_.m b/matlab/simult_.m
index 1ab1729cfebcc9780e6c2dde88ec6f36a431a4a6..b98cb3da4a81cec14e62c9935cea63e294e811d3 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