diff --git a/matlab/invoke_openEMS.m b/matlab/invoke_openEMS.m
index 4de39e4..31ecb75 100644
--- a/matlab/invoke_openEMS.m
+++ b/matlab/invoke_openEMS.m
@@ -32,6 +32,8 @@ end
 filename = mfilename('fullpath');
 dir = fileparts( filename );
 openEMS_Path = [dir filesep '..' filesep];
+
+openEMS_Path = ''; % this is a packaged openEMS installation; openEMS.sh is found in $PATH
     
 if isunix
 	openEMS_Path = [openEMS_Path 'openEMS.sh'];