diff --git a/pipewire-alsa/alsa-plugins/ctl_pipewire.c b/pipewire-alsa/alsa-plugins/ctl_pipewire.c
index 6a5eff75e..8b3c26adf 100644
--- a/pipewire-alsa/alsa-plugins/ctl_pipewire.c
+++ b/pipewire-alsa/alsa-plugins/ctl_pipewire.c
@@ -555,7 +555,7 @@ static int set_volume_mute(snd_ctl_pipewire_t *ctl, const char *name, struct vol
 		param = spa_pod_builder_pop(&b, &f[0]);
 
 		pw_log_debug("set device %d mute/volume for node %d", dg->id, g->id);
-		pw_device_set_param((struct pw_node*)dg->proxy,
+		pw_device_set_param((struct pw_device*)dg->proxy,
 			SPA_PARAM_Route, 0, param);
 	} else {
 		if (!SPA_FLAG_IS_SET(g->permissions, PW_PERM_W | PW_PERM_X))
diff --git a/pipewire-jack/src/pipewire-jack.c b/pipewire-jack/src/pipewire-jack.c
index b7851a3ae..f16d366b5 100644
--- a/pipewire-jack/src/pipewire-jack.c
+++ b/pipewire-jack/src/pipewire-jack.c
@@ -4002,7 +4002,7 @@ static void registry_event_global(void *data, uint32_t id,
 			pw_proxy_add_listener(proxy,
 					&c->metadata->proxy_listener,
 					&metadata_proxy_events, c);
-			pw_metadata_add_listener(proxy,
+			pw_metadata_add_listener(c->metadata->proxy,
 					&c->metadata->listener,
 					&metadata_events, c);
 			do_sync = true;
diff --git a/pipewire-v4l2/src/pipewire-v4l2.c b/pipewire-v4l2/src/pipewire-v4l2.c
index 5a41bf2b1..2e5a4045d 100644
--- a/pipewire-v4l2/src/pipewire-v4l2.c
+++ b/pipewire-v4l2/src/pipewire-v4l2.c
@@ -2326,7 +2326,7 @@ static int vidioc_s_ctrl(struct file *file, struct v4l2_control *arg)
 			}
 
 			param = spa_pod_builder_pop(&b, &f[0]);
-			pw_node_set_param(file->node->proxy, SPA_PARAM_Props, 0, param);
+			pw_node_set_param((struct pw_node*)file->node->proxy, SPA_PARAM_Props, 0, param);
 
 			found = true;
 			pw_log_info("ctrl 0x%08" PRIx32 " set ok", arg->id);
diff --git a/src/modules/module-protocol-pulse/manager.c b/src/modules/module-protocol-pulse/manager.c
index 68281bc4a..ec8b0963d 100644
--- a/src/modules/module-protocol-pulse/manager.c
+++ b/src/modules/module-protocol-pulse/manager.c
@@ -809,7 +809,7 @@ int pw_manager_set_metadata(struct pw_manager *manager,
 		value = NULL;
 	}
 
-	pw_metadata_set_property(metadata->proxy,
+	pw_metadata_set_property((struct pw_metadata*)metadata->proxy,
 			subject, key, type, value);
 	return 0;
 }