diff --git a/scripts/post-bmad-install.sh b/scripts/post-bmad-install.sh
index f96528d..2307a09 100755
--- a/scripts/post-bmad-install.sh
+++ b/scripts/post-bmad-install.sh
@@ -67,12 +67,11 @@ patch_agent() {
     memory="$(build_memory "$agent")"
 
     # Remplacer memories: [] par le bloc injecté
-    # Compatible macOS (sed -i '') et Linux (sed -i)
-    if [[ "$(uname)" == "Darwin" ]]; then
-      sed -i '' "s|^memories: \[\]|memories:\n  - \"${memory}\"|" "$file"
-    else
-      sed -i "s|^memories: \[\]|memories:\n  - \"${memory}\"|" "$file"
-    fi
+    # Utilise awk pour éviter les conflits avec les caractères spéciaux (|, <, >) dans sed
+    awk -v mem="$memory" '
+      /^memories: \[\]/ { print "memories:"; print "  - \"" mem "\""; next }
+      { print }
+    ' "$file" > "${file}.tmp" && mv "${file}.tmp" "$file"
 
     echo "  [ok]   $agent — memory injectée"
   else