diff --git a/engines/dfc_provider/app/services/enterprise_builder.rb b/engines/dfc_provider/app/services/enterprise_builder.rb
index b2087c2601..b03d27737d 100644
--- a/engines/dfc_provider/app/services/enterprise_builder.rb
+++ b/engines/dfc_provider/app/services/enterprise_builder.rb
@@ -23,6 +23,9 @@ class EnterpriseBuilder < DfcBuilder
       socialMedias: SocialMediaBuilder.social_medias(enterprise),
       websites: [enterprise.website].compact,
     ).tap do |e|
+      # The model strips the protocol and we need to add it:
+      e.websites = e.websites.map { |url| "https://#{url}" }
+
       add_ofn_property(e, "ofn:long_description", enterprise.long_description)
 
       # This could be expressed as dfc-b:hasMainContact Person with name.
diff --git a/engines/dfc_provider/spec/requests/enterprises_spec.rb b/engines/dfc_provider/spec/requests/enterprises_spec.rb
index 587971a2ec..c205bc62a9 100644
--- a/engines/dfc_provider/spec/requests/enterprises_spec.rb
+++ b/engines/dfc_provider/spec/requests/enterprises_spec.rb
@@ -71,6 +71,7 @@ describe "Enterprises", type: :request, swagger_doc: "dfc.yaml", rswag_autodoc:
 
             expect(json_response["@graph"][0]).to include(
               "dfc-b:affiliates" => "http://test.host/api/dfc/enterprise_groups/60000",
+              "dfc-b:websitePage" => "https://openfoodnetwork.org",
             )
 
             # Insert static value to keep documentation deterministic:
diff --git a/swagger/dfc.yaml b/swagger/dfc.yaml
index a96c33c2e7..f75cd154dc 100644
--- a/swagger/dfc.yaml
+++ b/swagger/dfc.yaml
@@ -376,7 +376,7 @@ paths:
                       dfc-b:hasAddress: http://test.host/api/dfc/addresses/40000
                       dfc-b:hasPhoneNumber: 0404 444 000 200
                       dfc-b:email: hello@example.org
-                      dfc-b:websitePage: openfoodnetwork.org
+                      dfc-b:websitePage: https://openfoodnetwork.org
                       dfc-b:hasSocialMedia: http://test.host/api/dfc/enterprises/10000/social_medias/facebook
                       dfc-b:logo: ''
                       dfc-b:name: Fred's Farm