1 files changed, 2 insertions, 2 deletions

diff --git a/firmware/export/debug.h b/firmware/export/debug.h
index f8aa7d4113..0506ff1e42 100644
--- a/firmware/export/debug.h
+++ b/firmware/export/debug.h
@@ -20,8 +20,8 @@
 #define DEBUG_H
 
 extern void debug_init(void);
-extern void debugf(char* fmt,...);
-extern void ldebugf(char* file, int line, char *fmt, ...);
+extern void debugf(const char* fmt,...);
+extern void ldebugf(const char* file, int line, const char *fmt, ...);
 
 #ifdef __GNUC__