diff --git a/firmware/libcommon/source/sniffer.c b/firmware/libcommon/source/sniffer.c
index 9202d8e..be57d54 100644
--- a/firmware/libcommon/source/sniffer.c
+++ b/firmware/libcommon/source/sniffer.c
@@ -335,7 +335,7 @@
 				printf(", ");
 			}
 		}
-		printf(")");
+		putchar(')');
 	}
 	printf(": ");
 	uint16_t i;