diff --git a/src/main/java/com/zaxxer/hikari/proxy/ConnectionProxy.java b/src/main/java/com/zaxxer/hikari/proxy/ConnectionProxy.java
index 0e5f2da6..6bc6af4d 100644
--- a/src/main/java/com/zaxxer/hikari/proxy/ConnectionProxy.java
+++ b/src/main/java/com/zaxxer/hikari/proxy/ConnectionProxy.java
@@ -143,7 +143,7 @@ public abstract class ConnectionProxy implements IHikariConnectionProxy
             forceClose |= sqlState.startsWith("08") | SQL_ERRORS.contains(sqlState);
             if (forceClose)
             {
-                LOGGER.warn("Connection {} marked as broken because of SQLSTATE({})", delegate.toString(), sqlState);
+                LOGGER.warn("Connection {} marked as broken because of SQLSTATE({}), ErrorCode({}): {}", delegate.toString(), sqlState, sqle.getErrorCode(), sqle.getNextException());
             }
         }
     }