diff --git a/ext/oci8/oci8_statement.c b/ext/oci8/oci8_statement.c
index c7c1ff4b21d..542ccf0686e 100644
--- a/ext/oci8/oci8_statement.c
+++ b/ext/oci8/oci8_statement.c
@@ -124,7 +124,7 @@ php_oci_statement *php_oci_statement_create (php_oci_connection *connection, zst
 
 /* {{{ php_oci_statement_set_prefetch()
  Set prefetch buffer size for the statement (we're assuming that one row is ~1K sized) */
-int php_oci_statement_set_prefetch(php_oci_statement *statement, ub4 size TSRMLS_DC)
+int php_oci_statement_set_prefetch(php_oci_statement *statement, long size TSRMLS_DC)
 { 
 	ub4 prefetch = size * 1024;
 
diff --git a/ext/oci8/php_oci8_int.h b/ext/oci8/php_oci8_int.h
index 7181574e36b..43d3c6e4272 100644
--- a/ext/oci8/php_oci8_int.h
+++ b/ext/oci8/php_oci8_int.h
@@ -382,7 +382,7 @@ int php_oci_collection_append_string(php_oci_collection *, zstr, int TSRMLS_DC);
 /* statement related prototypes {{{ */
 
 php_oci_statement * php_oci_statement_create (php_oci_connection *, zstr, int, zend_uchar TSRMLS_DC);
-int php_oci_statement_set_prefetch (php_oci_statement *, ub4 TSRMLS_DC);
+int php_oci_statement_set_prefetch (php_oci_statement *, long TSRMLS_DC);
 int php_oci_statement_fetch (php_oci_statement *, ub4 TSRMLS_DC);
 php_oci_out_column * php_oci_statement_get_column (php_oci_statement *, long, zstr, int TSRMLS_DC);
 int php_oci_statement_execute (php_oci_statement *, ub4 TSRMLS_DC);