diff --git a/src/compiler/crystal/command/docs.cr b/src/compiler/crystal/command/docs.cr
index 19e7fedf768b..c8f044bc81cd 100644
--- a/src/compiler/crystal/command/docs.cr
+++ b/src/compiler/crystal/command/docs.cr
@@ -98,7 +98,7 @@ class Crystal::Command
       setup_compiler_warning_options(opts, compiler)
     end
 
-    project_info = ProjectInfo.new_with_defaults(project_name, project_version) do |name, version|
+    project_info = Doc::ProjectInfo.new_with_defaults(project_name, project_version) do |name, version|
       unless name
         STDERR.puts "Couldn't determine name from shard.yml, please provide --project-name option"
       end