diff --git a/src/main/java/de/diddiz/LogBlock/Updater.java b/src/main/java/de/diddiz/LogBlock/Updater.java
index a521659..fcd2b70 100644
--- a/src/main/java/de/diddiz/LogBlock/Updater.java
+++ b/src/main/java/de/diddiz/LogBlock/Updater.java
@@ -738,9 +738,14 @@ class Updater {
                     st.execute("ALTER TABLE `" + wcfg.table + "-entities` ADD KEY entityid (entityid)");
                     logblock.getLogger().info("Added index for table " + wcfg.table + "-entities");
                     st.close();
-                    conn.close();
                 } catch (final SQLException ex) {
-                    logblock.getLogger().log(Level.SEVERE, "[Updater] Error: ", ex);
+                    logblock.getLogger().log(Level.SEVERE, "[Updater] Warning: Could not upgrade the database: " + ex.getMessage());
+                } finally {
+                    try {
+                        conn.close();
+                    } catch (SQLException e) {
+                        // ignored
+                    }
                 }
             }
             config.set("version", "1.16.0");