diff --git a/src/grammar/hive/HiveSqlLexer.g4 b/src/grammar/hive/HiveSqlLexer.g4
index df24628..28344a9 100644
--- a/src/grammar/hive/HiveSqlLexer.g4
+++ b/src/grammar/hive/HiveSqlLexer.g4
@@ -16,7 +16,8 @@
 */
 lexer grammar HiveSqlLexer;
 
-options { caseInsensitive = true; }
+// unsupported option caseInsensitive in antlr4@4.9
+// options { caseInsensitive = true; }
 
 // Keywords
 KW_ABORT                               : 'ABORT';
diff --git a/src/grammar/hive/HiveSql.g4 b/src/grammar/hive/HiveSqlParser.g4
similarity index 99%
rename from src/grammar/hive/HiveSql.g4
rename to src/grammar/hive/HiveSqlParser.g4
index 6d09b79..73111eb 100644
--- a/src/grammar/hive/HiveSql.g4
+++ b/src/grammar/hive/HiveSqlParser.g4
@@ -14,7 +14,7 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 */
-parser grammar HiveSql;
+parser grammar HiveSqlParser;
 
 options
 {
@@ -3058,4 +3058,4 @@ alterMappingStatement
 dropMappingStatement
     : KW_DROP mappingType=(KW_USER | KW_GROUP | KW_APPLICATION) KW_MAPPING
          name=StringLiteral KW_IN rpName=id_
-    ;
\ No newline at end of file
+    ;