diff --git a/src/pages/signature/signature.ts b/src/pages/signature/signature.ts
index b01f1c6..839457e 100755
--- a/src/pages/signature/signature.ts
+++ b/src/pages/signature/signature.ts
@@ -563,7 +563,8 @@ function showProcessDetails(group: Group, groupId: number) {
 
                             // Ajouter le bouton de signature pour tous les documents non vierges en mode dev
                             const signButton = !isVierge ? `
-                                ${totalSignatures > 0 && signedCount < totalSignatures ? `
+                                ${totalSignatures > 0 && signedCount < totalSignatures && 
+                                !document.signatures.find((sig: DocumentSignature) => sig.member.name === currentUser.name && sig.signed) ? `
                                     <button class="sign-button" onclick="signDocument(${document.id}, ${groupId}, true)">
                                         Signer le document
                                     </button>
@@ -632,7 +633,9 @@ function showProcessDetails(group: Group, groupId: number) {
 
                                         // Ajouter le bouton de signature pour tous les documents non vierges en mode dev
                                         const signButton = !isVierge ? `
-                                            ${document.signatures.length > 0 && document.signatures.filter((sig: DocumentSignature) => sig.signed).length < document.signatures.length ? `
+                                            ${document.signatures.length > 0 && 
+                                            document.signatures.filter((sig: DocumentSignature) => sig.signed).length < document.signatures.length && 
+                                            !document.signatures.find((sig: DocumentSignature) => sig.member.name === currentUser.name && sig.signed) ? `
                                                 <button class="sign-button" onclick="signDocument(${document.id}, ${groupId}, false)">
                                                     Signer le document
                                                 </button>
@@ -1580,7 +1583,7 @@ function signDocument(documentId: number, processId: number, isCommonDocument: b
                                                     <span class="file-icon">📄</span>
                                                     <span class="file-name">${file.name}</span>
                                                     <a href="${file.url}" class="download-link" download="${file.name}">
-                                                        <span class="download-icon">⬇️</span>
+                                                        <span class="download-icon">⬇��</span>
                                                     </a>
                                                 </div>
                                             `).join('')