1 files changed, 1 insertions, 1 deletions

diff --git a/sway/commands.c b/sway/commands.c
index 3ccbcd2e..febff2dd 100644
--- a/sway/commands.c
+++ b/sway/commands.c
@@ -1632,7 +1632,7 @@ static struct cmd_results *cmd_output(int argc, char **argv) {
                         }
                         char *src = join_args(argv + i, argc - i - 1);
                         char *mode = argv[argc - 1];
-                        if (wordexp(src, &p, 0) != 0) {
+                        if (wordexp(src, &p, 0) != 0 || p.we_wordv[0] == NULL) {
                                 return cmd_results_new(CMD_INVALID, "output", "Invalid syntax (%s)", src);
                         }
                         free(src);