diff --git a/install.sh b/install.sh
index 6cf2d59..a84f30b 100644
--- a/install.sh
+++ b/install.sh
@@ -243,11 +243,15 @@ if [ -d "$INSTALL_DIR" ]; then
 
   echo "Updating existing installation at $INSTALL_DIR..."
 
-  # Check if service is running and stop it
-  if systemctl is-active --quiet nupst 2>/dev/null; then
-    echo "Stopping NUPST service..."
-    systemctl stop nupst
+  # Check if service exists (enabled or running) and stop it if active
+  if systemctl is-enabled --quiet nupst 2>/dev/null || systemctl is-active --quiet nupst 2>/dev/null; then
     SERVICE_WAS_RUNNING=1
+    if systemctl is-active --quiet nupst 2>/dev/null; then
+      echo "Stopping NUPST service..."
+      systemctl stop nupst
+    else
+      echo "Service is installed but not currently running (will be updated)..."
+    fi
   fi
 
   # Clean up old Node.js installation files