diff --git a/firmware/config/stm32f4ems/chconf.h b/firmware/config/stm32f4ems/chconf.h
index 3cf817cdb6..58c8c8d8e9 100644
--- a/firmware/config/stm32f4ems/chconf.h
+++ b/firmware/config/stm32f4ems/chconf.h
@@ -754,6 +754,9 @@
 
 #ifndef __ASSEMBLER__
 
+#ifdef __cplusplus
+extern "C"
+#endif
 void chDbgPanic3(const char *msg, const char * file, int line);
 #endif