diff --git a/htdocs/admin/modules.php b/htdocs/admin/modules.php
index ac8ff6161a9..f6e281f5e2d 100644
--- a/htdocs/admin/modules.php
+++ b/htdocs/admin/modules.php
@@ -231,7 +231,7 @@ if ($action == 'install') {
 					if (!$error) {
 						@dol_delete_dir_recursive($dirins.'/'.$modulenameval); // delete the target directory
 						$submodulenamedir = $conf->admin->dir_temp.'/'.$tmpdir.'/'.$modulenameval;
-						if (!dol_is_dir($modulenamedir)) {
+						if (!dol_is_dir($submodulenamedir)) {
 							$submodulenamedir = $conf->admin->dir_temp.'/'.$tmpdir.'/htdocs/'.$modulenameval;
 						}
 						dol_syslog("We copy now directory ".$submodulenamedir." into target dir ".$dirins.'/'.$modulenameval);