diff --git a/editor/themes/theme_classic.cpp b/editor/themes/theme_classic.cpp
index 8c44deb72e..3c4fda3fed 100644
--- a/editor/themes/theme_classic.cpp
+++ b/editor/themes/theme_classic.cpp
@@ -1045,6 +1045,9 @@ void ThemeClassic::populate_standard_styles(const Ref<EditorTheme> &p_theme, Edi
 
 		// FileDialog.
 		p_theme->set_icon("folder", "FileDialog", p_theme->get_icon("Folder", EditorStringName(EditorIcons)));
+		p_theme->set_icon("file", "FileDialog", p_theme->get_icon("File", EditorStringName(EditorIcons)));
+		p_theme->set_icon("folder_thumbnail", "FileDialog", p_theme->get_icon("FolderBigThumb", EditorStringName(EditorIcons)));
+		p_theme->set_icon("file_thumbnail", "FileDialog", p_theme->get_icon("FileBigThumb", EditorStringName(EditorIcons)));
 		p_theme->set_icon("parent_folder", "FileDialog", p_theme->get_icon("ArrowUp", EditorStringName(EditorIcons)));
 		p_theme->set_icon("back_folder", "FileDialog", p_theme->get_icon("Back", EditorStringName(EditorIcons)));
 		p_theme->set_icon("forward_folder", "FileDialog", p_theme->get_icon("Forward", EditorStringName(EditorIcons)));
diff --git a/editor/themes/theme_modern.cpp b/editor/themes/theme_modern.cpp
index 149724340e..b8b315d7da 100644
--- a/editor/themes/theme_modern.cpp
+++ b/editor/themes/theme_modern.cpp
@@ -1031,6 +1031,9 @@ void ThemeModern::populate_standard_styles(const Ref<EditorTheme> &p_theme, Edit
 
 		// FileDialog.
 		p_theme->set_icon("folder", "FileDialog", p_theme->get_icon("Folder", EditorStringName(EditorIcons)));
+		p_theme->set_icon("file", "FileDialog", p_theme->get_icon("File", EditorStringName(EditorIcons)));
+		p_theme->set_icon("folder_thumbnail", "FileDialog", p_theme->get_icon("FolderBigThumb", EditorStringName(EditorIcons)));
+		p_theme->set_icon("file_thumbnail", "FileDialog", p_theme->get_icon("FileBigThumb", EditorStringName(EditorIcons)));
 		p_theme->set_icon("parent_folder", "FileDialog", p_theme->get_icon("ArrowUp", EditorStringName(EditorIcons)));
 		p_theme->set_icon("back_folder", "FileDialog", p_theme->get_icon("Back", EditorStringName(EditorIcons)));
 		p_theme->set_icon("forward_folder", "FileDialog", p_theme->get_icon("Forward", EditorStringName(EditorIcons)));