diff --git a/matlab/RunOpenEMS.m b/matlab/RunOpenEMS.m
index a4947e3..3894adc 100644
--- a/matlab/RunOpenEMS.m
+++ b/matlab/RunOpenEMS.m
@@ -21,7 +21,7 @@ function RunOpenEMS(Sim_Path, Sim_File, opts, Settings)
 %             --engine=fastest         fastest available engine (default)
 %             --engine=basic           basic FDTD engine
 %             --engine=sse             engine using sse vector extensions
-%             --engine=sse_compressed  engine using compressed operator + sse vector extensions
+%             --engine=sse-compressed  engine using compressed operator + sse vector extensions
 %             --engine=MPI             engine using compressed operator + sse vector extensions + MPI parallel processing
 %             --engine=multithreaded   engine using compressed operator + sse vector extensions + MPI + multithreading
 %         --numThreads=<n>     Force use n threads for multithreaded engine