diff --git a/update-nutools b/update-nutools
index ae14274..3764bcb 100755
--- a/update-nutools
+++ b/update-nutools
@@ -9,13 +9,17 @@ if [ $# -ne 1 -o "$1" != --do-update ]; then
     /bin/cp "$0" "$TMPSCRIPT"
     chmod 755 "$TMPSCRIPT"
     exec bash "$TMPSCRIPT" --do-update
-else
-    cd /tmp
-    rm -rf "$NAME"
-    git clone "$REPO" || exit 1
-    cd "$NAME"
-    bash ./uinst -y || exit 1
-    cd ..
-    rm -rf "$NAME"
-    rm "$0"; exit 0
 fi
+
+cd /tmp
+rm -rf "$NAME"
+git clone "$REPO" || exit 1
+cd "$NAME"
+if ! diff -q update-nutools "$0"; then
+    echo "Le fichier update-nutools a été mis à jour. Ce script va être relancé"
+    exec bash ./update-nutools
+fi
+bash ./uinst -y || exit 1
+cd ..
+rm -rf "$NAME"
+rm "$0"; exit 0
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