diff --git a/firmware/util/efilib.h b/firmware/util/efilib.h
index fc201d7456..8f430e235b 100644
--- a/firmware/util/efilib.h
+++ b/firmware/util/efilib.h
@@ -30,13 +30,13 @@
 
 #define ERROR_CODE 311223344
 
-const char * boolToString(bool value);
-
 #ifdef __cplusplus
 extern "C"
 {
 #endif /* __cplusplus */
 
+const char * boolToString(bool value);
+
 char * efiTrim(char *param);
 uint32_t efiStrlen(const char *param);
 int efiPow10(int param);