diff --git a/src/App/StringHasher.h b/src/App/StringHasher.h
index e56ba9d9ac..04713bf91e 100644
--- a/src/App/StringHasher.h
+++ b/src/App/StringHasher.h
@@ -23,6 +23,8 @@
 #ifndef APP_STRING_ID_H
 #define APP_STRING_ID_H
 
+#include <FCConfig.h>
+
 #include <bitset>
 #include <memory>