diff --git a/pinaxcon/proposals/forms.py b/pinaxcon/proposals/forms.py
index 7a3f57795208ba33359b0eae392b64dfecf22b09..9a1cd2ff39e072e5f4b8e769fc0fafb6bf6145ef 100644
--- a/pinaxcon/proposals/forms.py
+++ b/pinaxcon/proposals/forms.py
@@ -21,6 +21,7 @@ DEFAULT_FIELDS =  [
     "require_approval",
     "recording_release",
     "materials_release",
+    "indicate_use_of_proprietary_software",
 ]
 
 TALK_FORMAT_FIELDS = copy.copy(DEFAULT_FIELDS)
@@ -30,6 +31,9 @@ TALK_FORMAT_FIELDS.append("ticket_acknowledgement")
 class ProposalForm(forms.ModelForm):
 
     required_css_class = 'label-required'
+    indicate_use_of_proprietary_software = forms.BooleanField(
+        help_text="Attendees at FOSSY need to be able to assume that any software mentioned is FOSS by default. I understand that I must indicate the use of any proprietary software on slides and any physical materials present.")
+
 
     def clean_description(self):
         value = self.cleaned_data["description"]