diff --git a/companion/src/mdichild.cpp b/companion/src/mdichild.cpp
index a55cc756f..88dae8cc3 100644
--- a/companion/src/mdichild.cpp
+++ b/companion/src/mdichild.cpp
@@ -83,9 +83,11 @@ void MdiChild::qSleep(int ms)
 void MdiChild::eepromInterfaceChanged()
 {
   ui->modelsList->refreshList();
-  ui->SimulateTxButton->setEnabled(GetCurrentFirmware()/*firmware*/->getCapability(Simulation));
   if (GetCurrentFirmware()->getBoard() == BOARD_HORUS && !HORUS_READY_FOR_RELEASE()) {
-    ui->SimulateTxButton->setDisabled(GetCurrentFirmware()/*firmware*/->getCapability(Simulation));
+      ui->SimulateTxButton->setEnabled(false);
+    }
+  else {
+      ui->SimulateTxButton->setEnabled(GetCurrentFirmware()->getCapability(Simulation));
   }
   updateTitle();
 }