diff --git a/.github/workflows/build-gtk.yml b/.github/workflows/build-gtk.yml
index a1b5537fb8ae..d0ab3db54bc6 100644
--- a/.github/workflows/build-gtk.yml
+++ b/.github/workflows/build-gtk.yml
@@ -36,6 +36,7 @@ jobs:
             dotnet workload install gtk --skip-manifest-update
       - name: Build MAUI
         run: |
+            dotnet build src/Controls/src/SourceGen/Controls.SourceGen.csproj
             dotnet build Microsoft.Maui.Gtk.slnf
 
   dotnet-format: