diff --git a/leveldb.go b/leveldb.go
index ee1e08d..63a5530 100644
--- a/leveldb.go
+++ b/leveldb.go
@@ -356,7 +356,7 @@ func (ldbs *LevelDBSession) interleavedSpatialQuery(first, second []byte, done c
 				}
 				it.Next()
 			} else {
-				it.Seek(common.ToBigEndian(common.NaiveBigMin(zmin, zmax, zcode)))
+				it.Seek(common.ToBigEndian(common.BigMin(zmin, zmax, zcode)))
 			}
 		}
 		if err = it.GetError(); err != nil {
diff --git a/sqlite.go b/sqlite.go
index 3ce7c90..bc6c5cf 100644
--- a/sqlite.go
+++ b/sqlite.go
@@ -353,7 +353,7 @@ func (ss *SqliteSession) interleavedSpatialQuery(first, second []byte, done chan
 					}
 				} else { // Left the cuboid
 					rows.Close()
-					zmin = common.NaiveBigMin(zmin, zmax, zcode)
+					zmin = common.BigMin(zmin, zmax, zcode)
 					continue OUTER
 				}
 			}