diff --git a/KissMeme/Sources/KissDB.swift b/KissMeme/Sources/KissDB.swift
index 7501413..28010f4 100644
--- a/KissMeme/Sources/KissDB.swift
+++ b/KissMeme/Sources/KissDB.swift
@@ -10,7 +10,6 @@ import Foundation
 import kissdb
 #endif
 
-
 public enum KissDBError: Error {
     case general(Int, String)
 }
diff --git a/kissdb/Sources/kissdb/kissdb.c b/kissdb/Sources/kissdb/kissdb.c
index c1b361c..1b3da1d 100644
--- a/kissdb/Sources/kissdb/kissdb.c
+++ b/kissdb/Sources/kissdb/kissdb.c
@@ -233,7 +233,7 @@ kiss_bool kiss_db_delete_into(kiss_db_ptr ptr, const void* in_key, kiss_uint in_
 
     kiss_db_item_t item;
     
-    if ((rc = mdb_cursor_get(ptr->cursor, &key, &data, MDB_NEXT_DUP)) == 0) {
+    if ((rc = mdb_cursor_get(ptr->cursor, &key, &data, MDB_SET)) == MDB_SUCCESS) {
         do {
             item.key = key.mv_data;
             item.key_size = key.mv_size;
@@ -245,7 +245,7 @@ kiss_bool kiss_db_delete_into(kiss_db_ptr ptr, const void* in_key, kiss_uint in_
             }
             CHECK_RET_ERROR_STMT(mdb_cursor_del(ptr->cursor, 0), false, CLOSE_CURSOR());
             
-        } while ((rc = mdb_cursor_get(ptr->cursor, &key, &data, MDB_NEXT_DUP)) == 0);
+        } while ((rc = mdb_cursor_get(ptr->cursor, &key, &data, MDB_NEXT_DUP)) == MDB_SUCCESS);
     }
     
     CLOSE_CURSOR();
@@ -308,7 +308,7 @@ kiss_bool kiss_db_select_all(kiss_db_ptr ptr, kiss_select_callback callback, voi
 
     kiss_db_item_t item;
     
-    while ((rc = mdb_cursor_get(ptr->cursor, &key, &data, MDB_NEXT)) == 0) {
+    while ((rc = mdb_cursor_get(ptr->cursor, &key, &data, MDB_NEXT)) == MDB_SUCCESS) {
         item.key = key.mv_data;
         item.key_size = key.mv_size;
         item.data = data.mv_data;