diff --git a/sys/suit/transport/coap.c b/sys/suit/transport/coap.c
index 2a3c87b919..6b10936a74 100644
--- a/sys/suit/transport/coap.c
+++ b/sys/suit/transport/coap.c
@@ -96,6 +96,8 @@ static inline void _print_download_progress(suit_manifest_t *manifest,
             puts("");
         }
     }
+#else
+    (void) image_size;
 #endif
 }
 #endif