diff --git a/src/Main.elm b/src/Main.elm
index 8c5256c..7ce7234 100644
--- a/src/Main.elm
+++ b/src/Main.elm
@@ -86,8 +86,8 @@ update msg model =
             , Route.Maze
                 { shape = shape
                 , seed = model.nextSeed
-                , width = Just width
-                , height = Just height
+                , width = width
+                , height = height
                 }
                 |> Route.toAbsolutePath
                 |> Navigation.pushUrl model.key
@@ -146,11 +146,7 @@ view model =
                         ]
 
                 Route.Maze info ->
-                    baseMaze
-                        { width = Maybe.withDefault 10 info.width
-                        , height = Maybe.withDefault 10 info.height
-                        , shape = info.shape
-                        }
+                    baseMaze info
                         |> Maze.generate (Random.initialSeed info.seed)
                         |> Maze.view
                             { cell = cellAttrs
diff --git a/src/Route.elm b/src/Route.elm
index 5069a00..847f2da 100644
--- a/src/Route.elm
+++ b/src/Route.elm
@@ -2,13 +2,13 @@ module Route exposing (MazeShape(..), Route(..), parse, toAbsolutePath)
 
 import Url exposing (Url)
 import Url.Builder as Builder
-import Url.Parser as Parser exposing ((</>), (<?>), Parser, int, map, oneOf, s, top)
+import Url.Parser as Parser exposing ((</>), Parser, int, map, oneOf, s, top)
 import Url.Parser.Query as Query
 
 
 type Route
     = New
-    | Maze { shape : MazeShape, seed : Int, width : Maybe Int, height : Maybe Int }
+    | Maze { shape : MazeShape, seed : Int, width : Int, height : Int }
     | NotFound
 
 
@@ -26,10 +26,10 @@ parser : Parser (Route -> b) b
 parser =
     oneOf
         [ map
-            (\shape seed width height ->
+            (\shape width height seed ->
                 Maze { shape = shape, seed = seed, width = width, height = height }
             )
-            (top </> s "maze" </> mazeShapeParser </> int <?> Query.int "width" <?> Query.int "height")
+            (top </> s "maze" </> mazeShapeParser </> int </> int </> int)
         , map New top
         ]
 
@@ -60,13 +60,11 @@ toAbsolutePath route =
             Builder.absolute
                 [ "maze"
                 , shapeToSegment shape
+                , String.fromInt width
+                , String.fromInt height
                 , String.fromInt seed
                 ]
-                (List.filterMap identity
-                    [ Maybe.map (Builder.int "width") width
-                    , Maybe.map (Builder.int "height") height
-                    ]
-                )
+                []
 
         NotFound ->
             Builder.absolute [ "404" ] []
diff --git a/tests/RouteTests.elm b/tests/RouteTests.elm
index ef6e237..ea04269 100644
--- a/tests/RouteTests.elm
+++ b/tests/RouteTests.elm
@@ -36,20 +36,12 @@ routeFuzzer =
             )
             mazeShapeFuzzer
             (Fuzz.intRange 0 1)
-            maybeDimensionFuzzer
-            maybeDimensionFuzzer
+            (Fuzz.intRange 0 1)
+            (Fuzz.intRange 0 1)
         , Fuzz.constant Route.NotFound
         ]
 
 
-maybeDimensionFuzzer : Fuzzer (Maybe Int)
-maybeDimensionFuzzer =
-    Fuzz.oneOf
-        [ Fuzz.constant Nothing
-        , Fuzz.map Just (Fuzz.intRange 0 1)
-        ]
-
-
 mazeShapeFuzzer : Fuzzer Route.MazeShape
 mazeShapeFuzzer =
     Fuzz.oneOf