1 files changed, 10 insertions, 0 deletions

diff --git a/sway/commands/output/enable.c b/sway/commands/output/enable.c
index 71a7d75a..0c98b481 100644
--- a/sway/commands/output/enable.c
+++ b/sway/commands/output/enable.c
@@ -1,3 +1,4 @@
+#include <strings.h>
 #include "sway/commands.h"
 #include "sway/config.h"
 
@@ -5,6 +6,15 @@ struct cmd_results *output_cmd_enable(int argc, char **argv) {
         if (!config->handler_context.output_config) {
                 return cmd_results_new(CMD_FAILURE, "Missing output config");
         }
+
+        // The NOOP-1 output is a dummy output used when there's no outputs
+        // connected. It should never be enabled.
+        char *output_name = config->handler_context.output_config->name;
+        if (strcasecmp(output_name, "NOOP-1") == 0) {
+                return cmd_results_new(CMD_FAILURE,
+                                "Refusing to enable the no op output");
+        }
+
         config->handler_context.output_config->enabled = 1;
 
         config->handler_context.leftovers.argc = argc;