diff --git a/src/shared/Database/DatabaseMysql.h b/src/shared/Database/DatabaseMysql.h
index bdf0dcb05be..079a83d6de8 100644
--- a/src/shared/Database/DatabaseMysql.h
+++ b/src/shared/Database/DatabaseMysql.h
@@ -74,7 +74,7 @@ class MySQLConnection : public SqlConnection
         QueryNamedResult* QueryNamed(const char* sql) override;
         bool Execute(const char* sql) override;
 
-        unsigned long escape_string(char* to, const char* from, unsigned long length);
+        unsigned long escape_string(char* to, const char* from, unsigned long length) override;
 
         bool BeginTransaction() override;
         bool CommitTransaction() override;