diff --git a/src/pipewire/utils.c b/src/pipewire/utils.c
index 3bbbb170c..aeb0f7803 100644
--- a/src/pipewire/utils.c
+++ b/src/pipewire/utils.c
@@ -162,7 +162,7 @@ char **pw_strv_parse(const char *val, size_t len, int max_tokens, int *n_tokens)
  * \since 0.3.84
  */
 SPA_EXPORT
-int pw_strv_find(char **a, char *b)
+int pw_strv_find(char **a, const char *b)
 {
 	int i;
 	if (a == NULL || b == NULL)
diff --git a/src/pipewire/utils.h b/src/pipewire/utils.h
index 92f8d004a..9889fd7f5 100644
--- a/src/pipewire/utils.h
+++ b/src/pipewire/utils.h
@@ -48,7 +48,7 @@ pw_split_ip(char *str, const char *delimiter, int max_tokens, char *tokens[]);
 
 char **pw_strv_parse(const char *val, size_t len, int max_tokens, int *n_tokens);
 
-int pw_strv_find(char **a, char *b);
+int pw_strv_find(char **a, const char *b);
 
 int pw_strv_find_common(char **a, char **b);