diff --git a/Userland/Applications/FileManager/FileOperationProgressWidget.cpp b/Userland/Applications/FileManager/FileOperationProgressWidget.cpp
index f88b09440ec..84f5a2c861f 100644
--- a/Userland/Applications/FileManager/FileOperationProgressWidget.cpp
+++ b/Userland/Applications/FileManager/FileOperationProgressWidget.cpp
@@ -66,7 +66,7 @@ FileOperationProgressWidget::FileOperationProgressWidget(FileOperation operation
     m_notifier->on_ready_to_read = [this] {
         auto line = m_helper_pipe->read_line();
         if (line.is_null()) {
-            did_error("Read from pipe returned null.");
+            did_error("Read from pipe returned null."sv);
             return;
         }
 
@@ -74,12 +74,12 @@ FileOperationProgressWidget::FileOperationProgressWidget(FileOperation operation
         VERIFY(!parts.is_empty());
 
         if (parts[0] == "ERROR"sv) {
-            did_error(line.substring(6));
+            did_error(line.substring_view(6));
             return;
         }
 
         if (parts[0] == "WARN"sv) {
-            did_error(line.substring(5));
+            did_error(line.substring_view(5));
             return;
         }
 
@@ -115,7 +115,7 @@ void FileOperationProgressWidget::did_finish()
     window()->close();
 }
 
-void FileOperationProgressWidget::did_error(String const message)
+void FileOperationProgressWidget::did_error(StringView const& message)
 {
     // FIXME: Communicate more with the user about errors.
     close_pipe();
diff --git a/Userland/Applications/FileManager/FileOperationProgressWidget.h b/Userland/Applications/FileManager/FileOperationProgressWidget.h
index cb4f8152455..b6b651945d8 100644
--- a/Userland/Applications/FileManager/FileOperationProgressWidget.h
+++ b/Userland/Applications/FileManager/FileOperationProgressWidget.h
@@ -22,7 +22,7 @@ private:
     FileOperationProgressWidget(FileOperation, NonnullRefPtr<Core::File> helper_pipe);
 
     void did_finish();
-    void did_error(String message);
+    void did_error(StringView const& message);
     void did_progress(off_t bytes_done, off_t total_byte_count, size_t files_done, size_t total_file_count, off_t current_file_done, off_t current_file_size, StringView const& current_filename);
 
     void close_pipe();