diff --git a/main/dmx_output.c b/main/dmx_output.c
index 83522cc9..ec160e15 100644
--- a/main/dmx_output.c
+++ b/main/dmx_output.c
@@ -23,7 +23,7 @@ int init_dmx_output(struct dmx_output_state *state, int index, const struct dmx_
   }
 
   // dmx output
-  struct dmx_output_options options;
+  struct dmx_output_options options = {};
 
   LOG_INFO("dmx-output%d: enabled", index + 1);