diff --git a/src/sql/drivers/oci/qsql_oci.cpp b/src/sql/drivers/oci/qsql_oci.cpp
index f0c0b224bd..6042eb5c09 100644
--- a/src/sql/drivers/oci/qsql_oci.cpp
+++ b/src/sql/drivers/oci/qsql_oci.cpp
@@ -497,8 +497,8 @@ public:
     OCIError *err;
     bool transaction;
     int serverVersion;
-    ub4 prefetchRows;
-    ub2 prefetchMem;
+    int prefetchRows;
+    int prefetchMem;
     QString user;
 
     void allocErrorHandle();