diff --git a/firmware/export/logf.h b/firmware/export/logf.h
index 145c5c5169..016425f334 100644
--- a/firmware/export/logf.h
+++ b/firmware/export/logf.h
@@ -20,6 +20,7 @@
 #define LOGF_H
 #include <config.h>
 #include <stdbool.h>
+#include "_ansi.h"
 
 #ifdef ROCKBOX_HAS_LOGF