diff --git a/firmware/target/hosted/rtc.c b/firmware/target/hosted/rtc.c
index c1a3f3cbcc..c5bf9816a9 100644
--- a/firmware/target/hosted/rtc.c
+++ b/firmware/target/hosted/rtc.c
@@ -62,6 +62,7 @@ int rtc_write_datetime(const struct tm *tm)
 
     return 0;
 #else
+    (void)tm;
     return -1;
 #endif
 }