diff --git a/app/models/concerns/dossier_rebase_concern.rb b/app/models/concerns/dossier_rebase_concern.rb
index d09ad1ba0..24d2fc71d 100644
--- a/app/models/concerns/dossier_rebase_concern.rb
+++ b/app/models/concerns/dossier_rebase_concern.rb
@@ -14,12 +14,12 @@ module DossierRebaseConcern
   end
 
   def can_rebase?
-    revision != procedure.published_revision &&
+    procedure.published_revision.present? && revision != procedure.published_revision &&
       (brouillon? || accepted_en_construction_changes? || accepted_en_instruction_changes?)
   end
 
   def pending_changes
-    revision.compare(procedure.published_revision)
+    procedure.published_revision.present? ? revision.compare(procedure.published_revision) : []
   end
 
   def can_rebase_mandatory_change?(stable_id)
diff --git a/spec/models/dossier_rebase_concern_spec.rb b/spec/models/concern/dossier_rebase_concern_spec.rb
similarity index 98%
rename from spec/models/dossier_rebase_concern_spec.rb
rename to spec/models/concern/dossier_rebase_concern_spec.rb
index ae4838caa..08af234dd 100644
--- a/spec/models/dossier_rebase_concern_spec.rb
+++ b/spec/models/concern/dossier_rebase_concern_spec.rb
@@ -1,4 +1,4 @@
-describe Dossier do
+describe DossierRebaseConcern do
   describe '#can_rebase?' do
     let(:procedure) { create(:procedure, :with_type_de_champ_mandatory, :with_type_de_champ_private, :with_yes_no) }
     let(:attestation_template) { procedure.draft_revision.attestation_template.find_or_revise! }
@@ -6,6 +6,17 @@ describe Dossier do
     let(:private_type_de_champ) { procedure.active_revision.types_de_champ_private.first }
     let(:mandatory_type_de_champ) { procedure.active_revision.types_de_champ_public.find(&:mandatory?) }
 
+    context 'on unpublished procedure' do
+      context 'en_construction' do
+        let(:dossier) { create(:dossier, :en_construction, procedure: procedure) }
+
+        it 'should be false' do
+          expect(dossier.pending_changes).to be_empty
+          expect(dossier.can_rebase?).to be_falsey
+        end
+      end
+    end
+
     context 'en_construction' do
       let(:dossier) { create(:dossier, :en_construction, procedure: procedure) }