diff --git a/.gitignore b/.gitignore
index 5a0d74c59..13ab34672 100644
--- a/.gitignore
+++ b/.gitignore
@@ -60,8 +60,8 @@ app/static.go
 vendor/github.com/ugorji/go/codec/codecgen/bin/*
 *.codecgen.go
 client/build-external/*
-prog/staticui/*
-prog/externalui/*
+prog/staticui/staticui.go
+prog/externalui/externalui.go
 client/build-pkg
 client/bundle
 
diff --git a/prog/externalui/doc.go b/prog/externalui/doc.go
new file mode 100644
index 000000000..d847c1975
--- /dev/null
+++ b/prog/externalui/doc.go
@@ -0,0 +1,3 @@
+package externalui
+
+// This directory holds files generated by the 'esc' tool.
diff --git a/prog/staticui/doc.go b/prog/staticui/doc.go
new file mode 100644
index 000000000..ed0ecdd58
--- /dev/null
+++ b/prog/staticui/doc.go
@@ -0,0 +1,3 @@
+package staticui
+
+// This directory holds files generated by the 'esc' tool.