diff --git a/firmware/application/ffconf.h b/firmware/application/ffconf.h
index 42429b219..b838f9f2b 100644
--- a/firmware/application/ffconf.h
+++ b/firmware/application/ffconf.h
@@ -36,7 +36,7 @@
 /   3: f_lseek() function is removed in addition to 2. */
 
 
-#define	_USE_STRFUNC	0
+#define	_USE_STRFUNC	1
 /* This option switches string functions, f_gets(), f_putc(), f_puts() and
 /  f_printf().
 /