diff --git a/src/pipewire/control.c b/src/pipewire/control.c
index db83b636e..80e535ab4 100644
--- a/src/pipewire/control.c
+++ b/src/pipewire/control.c
@@ -52,7 +52,7 @@ pw_control_new(struct pw_core *core,
 		direction = SPA_DIRECTION_OUTPUT;
 		break;
 	default:
-		errno = -ENOTSUP;
+		errno = ENOTSUP;
 		goto error_exit;
 	}
 
diff --git a/src/pipewire/pipewire.c b/src/pipewire/pipewire.c
index bbcc91372..c1354e238 100644
--- a/src/pipewire/pipewire.c
+++ b/src/pipewire/pipewire.c
@@ -419,7 +419,7 @@ bool pw_debug_is_category_enabled(const char *name)
 SPA_EXPORT
 const char *pw_get_application_name(void)
 {
-	errno = -ENOTSUP;
+	errno = ENOTSUP;
 	return NULL;
 }
 
diff --git a/src/pipewire/stream.c b/src/pipewire/stream.c
index ffd343885..e96925c76 100644
--- a/src/pipewire/stream.c
+++ b/src/pipewire/stream.c
@@ -182,7 +182,7 @@ static struct param *add_param(struct pw_stream *stream,
 	int idx;
 
 	if (param == NULL || !spa_pod_is_object(param)) {
-		errno = -EINVAL;
+		errno = EINVAL;
 		return NULL;
 	}