diff --git a/query_classifier/test/oracle/func_length.test b/query_classifier/test/oracle/func_length.test
index 7b76d33a0..9a5056e6a 100644
--- a/query_classifier/test/oracle/func_length.test
+++ b/query_classifier/test/oracle/func_length.test
@@ -13,6 +13,8 @@ SET sql_mode=ORACLE;
 SELECT LENGTH(null), LENGTH('a'), LENGTH(123);
 SELECT LENGTHB(null), LENGTHB('a'), LENGTHB(123);
 
-SELECT LENGTH(_utf8 0xC39F), LENGTH(CHAR(14844588 USING utf8));
-SELECT LENGTHB(_utf8 0xC39F), LENGTHB(CHAR(14844588 USING utf8));
+# qc_sqlite: SELECT LENGTH(_utf8 0xC39F), LENGTH(CHAR(14844588 USING utf8));
+# Sqlite3 error: SQL logic error or missing database, near "0xC39F": syntax error
+# qc_sqlite: SELECT LENGTHB(_utf8 0xC39F), LENGTHB(CHAR(14844588 USING utf8));
+# Sqlite3 error: SQL logic error or missing database, near "0xC39F": syntax error
 EXPLAIN EXTENDED SELECT LENGTH('a'), LENGTHB('a');
diff --git a/query_classifier/test/qc_sqlite_unsupported.test b/query_classifier/test/qc_sqlite_unsupported.test
index 0ac9a97e8..792e40889 100644
--- a/query_classifier/test/qc_sqlite_unsupported.test
+++ b/query_classifier/test/qc_sqlite_unsupported.test
@@ -53,3 +53,7 @@ PREPARE stmt FROM 'UPDATE t2 AS A NATURAL JOIN v1 B SET B.f1 = 1';
 # (Sqlite3 error: SQL logic error or missing database, near "SET": syntax error):
 # "UPDATE t2 AS A NATURAL JOIN v1 B SET B.f1 = 1"
 
+SELECT LENGTH(_utf8 0xC39F), LENGTH(CHAR(14844588 USING utf8));
+# warning: [qc_sqlite] Statement was classified only based on keywords
+# (Sqlite3 error: SQL logic error or missing database, near "0xC39F": syntax error):
+# "SELECT LENGTH(_utf8 0xC39F), LENGTH(CHAR(14844588 USING utf8));"