diff --git a/src/jtag/jlink.c b/src/jtag/jlink.c
index 5c3dbbe7d..6c6e8febb 100644
--- a/src/jtag/jlink.c
+++ b/src/jtag/jlink.c
@@ -963,7 +963,7 @@ static void jlink_debug_buffer(u8 *buffer, int length)
 			snprintf(s, 4, " %02x", buffer[j]);
 			strcat(line, s);
 		}
-		LOG_DEBUG(line);
+		LOG_DEBUG("%s", line);
 	}
 }
 #endif