diff --git a/lib/impure/db_odbc.nim b/lib/impure/db_odbc.nim
index 8aadfae732..3568cf1cc3 100644
--- a/lib/impure/db_odbc.nim
+++ b/lib/impure/db_odbc.nim
@@ -508,7 +508,7 @@ proc open*(connection, user, password, database: string): DbConn {.
   if res != SQL_SUCCESS: dbError("Error: unable to initialise ODBC environment.")
   res = SQLSetEnvAttr(result.env,
                       SQL_ATTR_ODBC_VERSION.TSqlInteger,
-                      cast[SqlPointer](val.addr), resLen.TSqlInteger)
+                      cast[SqlPointer](val), resLen.TSqlInteger)
   if res != SQL_SUCCESS: dbError("Error: unable to set ODBC driver version.")
   # allocate hDb handle
   res = SQLAllocHandle(SQL_HANDLE_DBC, result.env, result.hDb)