diff --git a/src/pipewire/private.h b/src/pipewire/private.h
index 0f62ee44e..830534b7c 100644
--- a/src/pipewire/private.h
+++ b/src/pipewire/private.h
@@ -1321,8 +1321,6 @@ void pw_settings_init(struct pw_context *context);
 int pw_settings_expose(struct pw_context *context);
 void pw_settings_clean(struct pw_context *context);
 
-pthread_attr_t *pw_thread_fill_attr(const struct spa_dict *props, pthread_attr_t *attr);
-
 /** \endcond */
 
 #ifdef __cplusplus
diff --git a/src/pipewire/thread.c b/src/pipewire/thread.c
index d845f1477..68a708180 100644
--- a/src/pipewire/thread.c
+++ b/src/pipewire/thread.c
@@ -25,8 +25,9 @@ do {									\
 } while(false);
 
 SPA_EXPORT
-pthread_attr_t *pw_thread_fill_attr(const struct spa_dict *props, pthread_attr_t *attr)
+void *pw_thread_fill_attr(const struct spa_dict *props, void *_attr)
 {
+	pthread_attr_t *attr = _attr;
 	const char *str;
 	int res;
 
diff --git a/src/pipewire/thread.h b/src/pipewire/thread.h
index e29fb36e5..5ce948dcb 100644
--- a/src/pipewire/thread.h
+++ b/src/pipewire/thread.h
@@ -27,6 +27,7 @@ extern "C" {
 SPA_DEPRECATED
 void pw_thread_utils_set(struct spa_thread_utils *impl);
 struct spa_thread_utils *pw_thread_utils_get(void);
+void *pw_thread_fill_attr(const struct spa_dict *props, void *attr);
 
 #define pw_thread_utils_create(...)		spa_thread_utils_create(pw_thread_utils_get(), ##__VA_ARGS__)
 #define pw_thread_utils_join(...)		spa_thread_utils_join(pw_thread_utils_get(), ##__VA_ARGS__)