diff --git a/src/lib/nfs/Connection.cxx b/src/lib/nfs/Connection.cxx
index 6d24decc9..d6910a7a5 100644
--- a/src/lib/nfs/Connection.cxx
+++ b/src/lib/nfs/Connection.cxx
@@ -589,7 +589,7 @@ NfsConnection::BroadcastMountSuccess() noexcept
 }
 
 void
-NfsConnection::BroadcastMountError(std::exception_ptr &&e) noexcept
+NfsConnection::BroadcastMountError(std::exception_ptr e) noexcept
 {
 	assert(GetEventLoop().IsInside());
 
@@ -603,7 +603,7 @@ NfsConnection::BroadcastMountError(std::exception_ptr &&e) noexcept
 }
 
 void
-NfsConnection::BroadcastError(std::exception_ptr &&e) noexcept
+NfsConnection::BroadcastError(std::exception_ptr e) noexcept
 {
 	assert(GetEventLoop().IsInside());
 
diff --git a/src/lib/nfs/Connection.hxx b/src/lib/nfs/Connection.hxx
index 814209890..1debc0a05 100644
--- a/src/lib/nfs/Connection.hxx
+++ b/src/lib/nfs/Connection.hxx
@@ -186,7 +186,7 @@ public:
 	void CancelAndClose(struct nfsfh *fh, NfsCallback &callback) noexcept;
 
 protected:
-	virtual void OnNfsConnectionError(std::exception_ptr &&e) noexcept = 0;
+	virtual void OnNfsConnectionError(std::exception_ptr e) noexcept = 0;
 
 private:
 	void DestroyContext() noexcept;
@@ -203,8 +203,8 @@ private:
 
 	void MountInternal();
 	void BroadcastMountSuccess() noexcept;
-	void BroadcastMountError(std::exception_ptr &&e) noexcept;
-	void BroadcastError(std::exception_ptr &&e) noexcept;
+	void BroadcastMountError(std::exception_ptr e) noexcept;
+	void BroadcastError(std::exception_ptr e) noexcept;
 
 	static void MountCallback(int status, nfs_context *nfs, void *data,
 				  void *private_data) noexcept;
diff --git a/src/lib/nfs/Manager.cxx b/src/lib/nfs/Manager.cxx
index 6cab13390..07cc9766d 100644
--- a/src/lib/nfs/Manager.cxx
+++ b/src/lib/nfs/Manager.cxx
@@ -27,11 +27,11 @@ public:
 
 protected:
 	/* virtual methods from NfsConnection */
-	void OnNfsConnectionError(std::exception_ptr &&e) noexcept override;
+	void OnNfsConnectionError(std::exception_ptr e) noexcept override;
 };
 
 void
-NfsManager::ManagedConnection::OnNfsConnectionError(std::exception_ptr &&e) noexcept
+NfsManager::ManagedConnection::OnNfsConnectionError(std::exception_ptr e) noexcept
 {
 	FmtError(nfs_domain, "NFS error on '{}:{}': {}",
 		 GetServer(), GetExportName(), e);