diff --git a/pipewire-pulseaudio/src/channelmap.c b/pipewire-pulseaudio/src/channelmap.c
index 825d564ba..e52befa16 100644
--- a/pipewire-pulseaudio/src/channelmap.c
+++ b/pipewire-pulseaudio/src/channelmap.c
@@ -472,7 +472,6 @@ int pa_channel_map_equal(const pa_channel_map *a, const pa_channel_map *b) {
 SPA_EXPORT
 char* pa_channel_map_snprint(char *s, size_t l, const pa_channel_map *map) {
     unsigned channel;
-    bool first = true;
     char *e;
 
     pa_assert(s);
@@ -490,11 +489,10 @@ char* pa_channel_map_snprint(char *s, size_t l, const pa_channel_map *map) {
 
     for (channel = 0; channel < map->channels && l > 1; channel++) {
         l -= pa_snprintf(e, l, "%s%s",
-                      first ? "" : ",",
+                      channel == 0 ? "" : ",",
                       pa_channel_position_to_string(map->map[channel]));
 
         e = strchr(e, 0);
-        first = false;
     }
 
     return s;