diff --git a/packets.go b/packets.go
index 86f311500..fdbc95c12 100644
--- a/packets.go
+++ b/packets.go
@@ -699,7 +699,7 @@ func (stmt *mysqlStmt) writeCommandLongData(paramID int, arg []byte) (err error)
 func (stmt *mysqlStmt) writeExecutePacket(args []driver.Value) error {
 	if len(args) != stmt.paramCount {
 		return fmt.Errorf(
-			"Arguments count mismatch (Got: %d Has: %d",
+			"Arguments count mismatch (Got: %d Has: %d)",
 			len(args),
 			stmt.paramCount)
 	}