diff --git a/docs/api.md b/docs/api.md
index 7dd85c8e..d274dc97 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -2018,7 +2018,7 @@ _Appears in:_
 
 #### StringOrArray
 
-
+_Underlying type:_ _string array_
 
 StringOrArray is a helper type for storing string or array of string.
 
@@ -2337,7 +2337,7 @@ _Appears in:_
 
 #### UpdateStatus
 
-
+_Underlying type:_ _string_
 
 UpdateStatus defines status for application
 
diff --git a/docs/templates/api/type.tpl b/docs/templates/api/type.tpl
index dccd8c53..3e650408 100644
--- a/docs/templates/api/type.tpl
+++ b/docs/templates/api/type.tpl
@@ -4,7 +4,7 @@
 
 #### {{ $type.Name }}
 
-{{ if and $type.IsBasic $type.IsAlias }}_Underlying type:_ _{{ markdownRenderTypeLink $type.UnderlyingType }}_{{ end }}
+{{ if $type.IsAlias }}_Underlying type:_ _{{ markdownRenderTypeLink $type.UnderlyingType }}_{{ end }}
 
 {{ $type.Doc }}