diff --git a/pipewire-jack/src/pipewire-jack.c b/pipewire-jack/src/pipewire-jack.c
index 1bef74283..73627a67e 100644
--- a/pipewire-jack/src/pipewire-jack.c
+++ b/pipewire-jack/src/pipewire-jack.c
@@ -5318,7 +5318,7 @@ int jack_set_freewheel(jack_client_t* client, int onoff)
 	pw_thread_loop_lock(c->context.loop);
 	str = pw_properties_get(c->props, PW_KEY_NODE_GROUP);
 	if (str != NULL) {
-		char *p = strstr(str, ",pipewire.freewheel");
+		const char *p = strstr(str, ",pipewire.freewheel");
 		if (p == NULL)
 			p = strstr(str, "pipewire.freewheel");
 		if (p == NULL && onoff)
diff --git a/spa/plugins/bluez5/bluez5-dbus.c b/spa/plugins/bluez5/bluez5-dbus.c
index 21a5e53de..7dfe45911 100644
--- a/spa/plugins/bluez5/bluez5-dbus.c
+++ b/spa/plugins/bluez5/bluez5-dbus.c
@@ -720,14 +720,12 @@ static const char *bap_features_get_uuid(struct bap_features *feat, size_t i)
 /** Get feature name at \a i, or NULL if uuid doesn't match */
 static const char *bap_features_get_name(struct bap_features *feat, size_t i, const char *uuid)
 {
-	char *pos;
-
 	if (i >= feat->dict.n_items)
 		return NULL;
 	if (!spa_streq(feat->dict.items[i].value, uuid))
 		return NULL;
 
-	pos = strchr(feat->dict.items[i].key, ':');
+	const char *pos = strchr(feat->dict.items[i].key, ':');
 	if (!pos)
 		return NULL;
 	return pos + 1;
@@ -1336,7 +1334,6 @@ static struct spa_bt_adapter *adapter_find(struct spa_bt_monitor *monitor, const
 static int parse_modalias(const char *modalias, uint16_t *source, uint16_t *vendor,
 		uint16_t *product, uint16_t *version)
 {
-	char *pos;
 	unsigned int src, i, j, k;
 
 	if (spa_strstartswith(modalias, "bluetooth:"))
@@ -1346,7 +1343,7 @@ static int parse_modalias(const char *modalias, uint16_t *source, uint16_t *vend
 	else
 		return -EINVAL;
 
-	pos = strchr(modalias, ':');
+	const char *pos = strchr(modalias, ':');
 	if (pos == NULL)
 		return -EINVAL;
 
diff --git a/spa/plugins/support/logger.c b/spa/plugins/support/logger.c
index c6e6ca4b8..6ea5f31b5 100644
--- a/spa/plugins/support/logger.c
+++ b/spa/plugins/support/logger.c
@@ -73,7 +73,7 @@ impl_log_logtv(void *object,
 	char timestamp[18] = {0};
 	char topicstr[32] = {0};
 	char filename[64] = {0};
-	char location[1000 + RESERVED_LENGTH], *p, *s;
+	char location[1000 + RESERVED_LENGTH], *p;
 	static const char * const levels[] = { "-", "E", "W", "I", "D", "T", "*T*" };
 	const char *prefix = "", *suffix = "";
 	int size, len;
@@ -118,7 +118,7 @@ impl_log_logtv(void *object,
 
 
 	if (impl->line && line != 0) {
-		s = strrchr(file, '/');
+		const char *s = strrchr(file, '/');
 		spa_scnprintf(filename, sizeof(filename), "[%16.16s:%5i %s()]",
 			s ? s + 1 : file, line, func);
 	}