1 files changed, 3 insertions, 2 deletions

diff --git a/src/firejail/fs.c b/src/firejail/fs.c
index ab2958593..25b52f5ce 100644
--- a/src/firejail/fs.c
+++ b/src/firejail/fs.c
@@ -725,7 +725,7 @@ char *fs_check_overlay_dir(const char *subdirname, int allow_reuse) {
                 errExit("asprintf");
 
         if (is_link(dirname)) {
-                fprintf(stderr, "Error: invalid ~/.firejail directory\n");
+                fprintf(stderr, "Error: ~/.firejail directory is a symbolic link\n");
                 exit(1);
         }
         if (stat(dirname, &s) == -1) {
@@ -753,7 +753,7 @@ char *fs_check_overlay_dir(const char *subdirname, int allow_reuse) {
                 }
         }
         else if (s.st_uid != getuid()) {
-                fprintf(stderr, "Error: invalid ~/.firejail directory\n");
+                fprintf(stderr, "Error: ~/.firejail directory is not owned by the current user\n");
                 exit(1);
         }
         free(dirname);
@@ -837,6 +837,7 @@ void fs_overlayfs(void) {
         if (arg_overlay_keep) {
                 // set base for working and diff directories
                 basedir = cfg.overlay_dir;
+                assert(basedir);
 
                 // does the overlay exist?
                 if (stat(basedir, &s) == 0) {