diff --git a/activate_matconvnet.m b/activate_matconvnet.m
index 3053d9c..81a4f0a 100644
--- a/activate_matconvnet.m
+++ b/activate_matconvnet.m
@@ -4,13 +4,7 @@
 pluginpath = fileparts(which('pop_iclabel'));
 
 % activate matconvnet
-folder = fullfile(pluginpath, 'matconvnet', 'matlab', 'mex');
-path_cell = regexp(path, pathsep, 'split');
-if ispc  % Windows is not case-sensitive
-  flag = ~any(strcmpi(folder, path_cell));
-else
-  flag = ~any(strcmp(folder, path_cell));
+if ~exist(['vl_nnconv.', mexext()], 'file')
+    addpath(fullfile(pluginpath, 'matconvnet', 'matlab'));
+    vl_setupnn();
 end
-if flag
-    run(fullfile(pluginpath, 'matconvnet', 'matlab', 'vl_setupnn'))
-end
\ No newline at end of file