diff --git a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Document.json b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Document.json
index dd7db4ee78..bac0286c78 100644
--- a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Document.json
+++ b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Document.json
@@ -18,6 +18,9 @@
                 ".docx",
                 ".xlsx",
                 ".pptx",
+                ".doc",
+                ".xls",
+                ".ppt",
                 ".rtf",
                 ".csv",
                 ".md",