diff --git a/Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp
index 120ea73174..d356d3e747 100644
--- a/Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp
@@ -10,6 +10,18 @@
 
 namespace Web::Layout {
 
+GridFormattingContext::GridTrack GridFormattingContext::GridTrack::create_from_definition(CSS::ExplicitGridTrack const& definition)
+{
+    // NOTE: repeat() is expected to be expanded beforehand.
+    VERIFY(!definition.is_repeat());
+
+    if (definition.is_minmax()) {
+        return GridTrack(definition.minmax().min_grid_size(), definition.minmax().max_grid_size());
+    }
+
+    return GridTrack(definition.grid_size());
+}
+
 GridFormattingContext::GridFormattingContext(LayoutState& state, Box const& grid_container, FormattingContext* parent)
     : FormattingContext(Type::Grid, state, grid_container, parent)
 {
@@ -542,21 +554,15 @@ void GridFormattingContext::initialize_grid_tracks_from_definition(AvailableSpac
         }
         for (auto _ = 0; _ < repeat_count; _++) {
             switch (track_definition.type()) {
+            case CSS::ExplicitGridTrack::Type::Default:
             case CSS::ExplicitGridTrack::Type::MinMax:
-                tracks.append(GridTrack(track_definition.minmax().min_grid_size(), track_definition.minmax().max_grid_size()));
+                tracks.append(GridTrack::create_from_definition(track_definition));
                 break;
             case CSS::ExplicitGridTrack::Type::Repeat:
                 for (auto& explicit_grid_track : track_definition.repeat().grid_track_size_list().track_list()) {
-                    auto track_sizing_function = explicit_grid_track;
-                    if (track_sizing_function.is_minmax())
-                        tracks.append(GridTrack(track_sizing_function.minmax().min_grid_size(), track_sizing_function.minmax().max_grid_size()));
-                    else
-                        tracks.append(GridTrack(track_sizing_function.grid_size()));
+                    tracks.append(GridTrack::create_from_definition(explicit_grid_track));
                 }
                 break;
-            case CSS::ExplicitGridTrack::Type::Default:
-                tracks.append(GridTrack(track_definition.grid_size()));
-                break;
             default:
                 VERIFY_NOT_REACHED();
             }
diff --git a/Userland/Libraries/LibWeb/Layout/GridFormattingContext.h b/Userland/Libraries/LibWeb/Layout/GridFormattingContext.h
index 3110443b1c..6d25bd9e6a 100644
--- a/Userland/Libraries/LibWeb/Layout/GridFormattingContext.h
+++ b/Userland/Libraries/LibWeb/Layout/GridFormattingContext.h
@@ -148,6 +148,8 @@ private:
 
         bool is_gap { false };
 
+        static GridTrack create_from_definition(CSS::ExplicitGridTrack const& definition);
+
         GridTrack(CSS::GridSize min_track_sizing_function, CSS::GridSize max_track_sizing_function)
             : min_track_sizing_function(min_track_sizing_function)
             , max_track_sizing_function(max_track_sizing_function)