diff --git a/src/apps/poorman/constants.cpp b/src/apps/poorman/constants.cpp
index 3714e9cad6..ed4f5e101b 100644
--- a/src/apps/poorman/constants.cpp
+++ b/src/apps/poorman/constants.cpp
@@ -1,5 +1,7 @@
 #include "constants.h"
 
+#include <InterfaceDefs.h>
+
 // ------------------------------------------------------
 // PoorMan Window
 extern const char* STR_APP_SIG