diff --git a/src/modules/module-protocol-pulse/format.h b/src/modules/module-protocol-pulse/format.h
index c71ca3f49..8f0133f49 100644
--- a/src/modules/module-protocol-pulse/format.h
+++ b/src/modules/module-protocol-pulse/format.h
@@ -214,8 +214,6 @@ int format_info_from_param(struct format_info *info, struct spa_pod *param, uint
 const struct spa_pod *format_info_build_param(struct spa_pod_builder *b, uint32_t id,
 		const struct format_info *info, uint32_t *rate);
 
-int format_info_from_spec(struct format_info *info, const struct sample_spec *ss,
-		const struct channel_map *map);
 int format_info_to_spec(const struct format_info *info, struct sample_spec *ss,
 		struct channel_map *map);