diff --git a/inc/lweb_helper.pbi b/inc/lweb_helper.pbi
index c91921d..40cc8c2 100644
--- a/inc/lweb_helper.pbi
+++ b/inc/lweb_helper.pbi
@@ -9,6 +9,8 @@ Procedure.s mimetype(file.s)
       ProcedureReturn "application/pdf"
     Case "zip"
       ProcedureReturn "application/zip"
+    Case "gz"
+      ProcedureReturn "application/gzip"
     Case "doc"
       ProcedureReturn "application/msword"
     Case "xls"