diff --git a/matlab/gdatpaths.m b/matlab/gdatpaths.m
index c92cda1dc59d7ed20820be7f78c803fcaf54d7ca..d7dcdd4348e1e5cd648fc557065bfd7530611c1f 100644
--- a/matlab/gdatpaths.m
+++ b/matlab/gdatpaths.m
@@ -10,8 +10,8 @@ end
 
 a=which('gdat');
 path_gdat = fileparts(a);
-if ~contains(path,[path_gdat,':'])
-  warning('Folder %s containing gdat.m is not in your path!!',path_gdat); 
+if ~findstr(path,[path_gdat,':'])
+  warning('Folder %s containing gdat.m is not in your path!!',path_gdat);
 end
 
 if isempty(a), error('gdat is not in the MATLAB path'); end