diff --git a/src/common/dbtable.cpp b/src/common/dbtable.cpp
index 8a67be2311..5197a20326 100644
--- a/src/common/dbtable.cpp
+++ b/src/common/dbtable.cpp
@@ -1696,7 +1696,7 @@ bool wxDbTable::DropIndex(const wxString &idxName)
         pDb->Dbms() == dbmsDBASE /*|| Paradox needs this syntax too when we add support*/)
         sqlStmt.Printf(wxT("DROP INDEX %s ON %s"),
                        pDb->SQLTableName(idxName.c_str()).c_str(),
-                       pDb->SQLTableName(tableName.c_str().c_str()));
+                       pDb->SQLTableName(tableName.c_str()).c_str());
     else if ((pDb->Dbms() == dbmsMS_SQL_SERVER) ||
              (pDb->Dbms() == dbmsSYBASE_ASE))
         sqlStmt.Printf(wxT("DROP INDEX %s.%s"),