diff --git a/mindsdb_sql_parser/lexer.py b/mindsdb_sql_parser/lexer.py
index 7a76fe0..4a7b370 100644
--- a/mindsdb_sql_parser/lexer.py
+++ b/mindsdb_sql_parser/lexer.py
@@ -346,12 +346,10 @@ def INTEGER(self, t):
 
     @_(r"'(?:\\.|[^'])*(?:''(?:\\.|[^'])*)*'")
     def QUOTE_STRING(self, t):
-        t.value = t.value.replace('\\"', '"').replace("\\'", "'").replace("''", "'")
         return t
 
     @_(r'"(?:\\.|[^"])*"')
     def DQUOTE_STRING(self, t):
-        t.value = t.value.replace('\\"', '"').replace("\\'", "'")
         return t
 
     @_(r'\n+')
diff --git a/mindsdb_sql_parser/parser.py b/mindsdb_sql_parser/parser.py
index 5980296..6403265 100644
--- a/mindsdb_sql_parser/parser.py
+++ b/mindsdb_sql_parser/parser.py
@@ -2006,11 +2006,11 @@ def integer(self, p):
 
     @_('QUOTE_STRING')
     def quote_string(self, p):
-        return p[0].strip('\'')
+        return p[0].replace('\\"', '"').replace("\\'", "'").replace("''", "'").strip('\'')
 
     @_('DQUOTE_STRING')
     def dquote_string(self, p):
-        return p[0].strip('\"')
+        return p[0].replace('\\"', '"').replace("\\'", "'").strip('\"')
 
     # for raw query
 
diff --git a/tests/test_mindsdb/test_selects.py b/tests/test_mindsdb/test_selects.py
index 2c6ee71..c43f104 100644
--- a/tests/test_mindsdb/test_selects.py
+++ b/tests/test_mindsdb/test_selects.py
@@ -45,7 +45,7 @@ def test_select_status_column(self):
     def test_native_query(self):
         sql = """
            SELECT status 
-           FROM int1 (select q from p from r) 
+           FROM int1 (select q from p from r where x = 'test''test')
            group by 1
            limit 1
         """
@@ -54,7 +54,7 @@ def test_native_query(self):
             targets=[Identifier('status')],
             from_table=NativeQuery(
                 integration=Identifier('int1'),
-                query='select q from p from r'
+                query="select q from p from r where x = 'test''test'"
             ),
             limit=Constant(1),
             group_by=[Constant(1)]