diff --git a/firmware/libcommon/include/card_emu.h b/firmware/libcommon/include/card_emu.h
index 2668d73c..8b571bb1 100644
--- a/firmware/libcommon/include/card_emu.h
+++ b/firmware/libcommon/include/card_emu.h
@@ -15,6 +15,7 @@
  */
 #pragma once
 
+#include <stdbool.h>
 #include <stdint.h>
 
 struct card_handle;