diff --git a/CMakeLists.txt b/CMakeLists.txt
index b106e83..6a6bf99 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,7 @@ include($ENV{PICO_SDK_PATH}/external/pico_sdk_import.cmake)
 
 
 project(fanpico
-  VERSION 1.7.2
+  VERSION 1.7.3
   DESCRIPTION "FanPico - Programmable PWM (PC) Fan Controller"
   HOMEPAGE_URL https://kokkonen.net/fanpico/
   LANGUAGES C CXX ASM
diff --git a/src/filters.c b/src/filters.c
index b92b015..9aa9499 100644
--- a/src/filters.c
+++ b/src/filters.c
@@ -1,5 +1,5 @@
 /* filters.c
-   Copyright (C) 2023 Timo Kokkonen <tjko@iki.fi>
+   Copyright (C) 2023-2025 Timo Kokkonen <tjko@iki.fi>
 
    SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -55,11 +55,8 @@ int str2filter(const char *s)
 
 const char* filter2str(enum signal_filter_types source)
 {
-	for (int i = 0; filters[i].name; i++) {
-		if (source == i) {
-			return filters[i].name;
-		}
-	}
+	if (source <= FILTER_ENUM_MAX)
+		return filters[source].name;
 
 	return "none";
 }