1 files changed, 4 insertions, 0 deletions

diff --git a/sway/commands/gaps.c b/sway/commands/gaps.c
index 042b415f..ca8cb27a 100644
--- a/sway/commands/gaps.c
+++ b/sway/commands/gaps.c
@@ -88,6 +88,10 @@ static struct cmd_results *gaps_set_runtime(int argc, char **argv) {
         if (error) {
                 return error;
         }
+        if (!root->outputs->length) {
+                return cmd_results_new(CMD_INVALID, "gaps",
+                                "Can't run this command while there's no outputs connected.");
+        }
 
         struct gaps_data data;