diff --git a/src/pages/signature/signature.ts b/src/pages/signature/signature.ts
index 70d76cc..2b2a0c9 100755
--- a/src/pages/signature/signature.ts
+++ b/src/pages/signature/signature.ts
@@ -564,9 +564,11 @@ function showProcessDetails(group: Group, groupId: number) {
 
                             // Ajouter le bouton de signature pour tous les documents non vierges en mode dev
                             const signButton = !isVierge ? `
-                                <button class="sign-button" onclick="signDocument(${document.id}, ${groupId}, true)">
-                                    Signer le document
-                                </button>
+                                ${totalSignatures > 0 && signedCount < totalSignatures ? `
+                                    <button class="sign-button" onclick="signDocument(${document.id}, ${groupId}, true)">
+                                        Signer le document
+                                    </button>
+                                ` : ''}
                             ` : '';
 
                             return `
@@ -631,9 +633,11 @@ function showProcessDetails(group: Group, groupId: number) {
 
                                         // Ajouter le bouton de signature pour tous les documents non vierges en mode dev
                                         const signButton = !isVierge ? `
-                                            <button class="sign-button" onclick="signDocument(${document.id}, ${groupId}, false)">
-                                                Signer le document
-                                            </button>
+                                            ${document.signatures.length > 0 && document.signatures.filter((sig: DocumentSignature) => sig.signed).length < document.signatures.length ? `
+                                                <button class="sign-button" onclick="signDocument(${document.id}, ${groupId}, false)">
+                                                    Signer le document
+                                                </button>
+                                            ` : ''}
                                         ` : '';
 
                                         return `