diff --git a/scipost_django/submissions/forms.py b/scipost_django/submissions/forms.py
index 44ef955f4e662790aee6ad3d6fbcf093b170c346..ec0e2656c059e447e613a34fe6d04acb782594e8 100644
--- a/scipost_django/submissions/forms.py
+++ b/scipost_django/submissions/forms.py
@@ -1364,7 +1364,7 @@ class ReportForm(forms.ModelForm):
             'cols': 100
         })
 
-        self.fields['file_attachment'].label = 'File attachment (for a figure or similar)'
+        self.fields['file_attachment'].label = 'File attachment (2MB limit; for a figure or similar - please avoid annotated pdfs with ballooned file size)'
 
         # Required fields on submission; optional on save as draft
         if 'save_submit' in self.data: