diff --git a/CHANGELOG.md b/CHANGELOG.md
index a109a16b62..d3c24b7eaf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -45,6 +45,7 @@ These are only breaking changes for unformatted code.
 - Fix parsing/printing uncurried functions with type parameters https://github.com/rescript-lang/rescript-compiler/pull/5849
 - Fix compiler ppx issue when combining `async` and uncurried application https://github.com/rescript-lang/rescript-compiler/pull/5856
 - Fix issue where the internal representation of uncurried types would leak when a non-function is applied in a curried way https://github.com/rescript-lang/rescript-compiler/pull/5892
+- In GenType, check annotations also in module types to decide whether to produce the `.gen.tsx` file https://github.com/rescript-lang/rescript-compiler/pull/5903
 
 #### :nail_care: Polish
 
diff --git a/jscomp/gentype/Annotation.ml b/jscomp/gentype/Annotation.ml
index 5425982cc0..6d0c89f715 100644
--- a/jscomp/gentype/Annotation.ml
+++ b/jscomp/gentype/Annotation.ml
@@ -151,6 +151,16 @@ let rec moduleTypeCheckAnnotation ~checkAnnotation
     ->
     false
 
+and moduleTypeDeclarationCheckAnnotation ~checkAnnotation
+    ({mtd_type; mtd_attributes; mtd_loc = loc} :
+      Typedtree.module_type_declaration) =
+  mtd_attributes |> checkAnnotation ~loc
+  ||
+  match mtd_type with
+  | None -> false
+  | Some module_type ->
+    module_type |> moduleTypeCheckAnnotation ~checkAnnotation
+
 and moduleDeclarationCheckAnnotation ~checkAnnotation
     ({md_attributes; md_type; md_loc = loc} : Typedtree.module_declaration) =
   md_attributes |> checkAnnotation ~loc
@@ -158,19 +168,24 @@ and moduleDeclarationCheckAnnotation ~checkAnnotation
 
 and signatureItemCheckAnnotation ~checkAnnotation
     (signatureItem : Typedtree.signature_item) =
-  match signatureItem with
-  | {Typedtree.sig_desc = Typedtree.Tsig_type (_, typeDeclarations)} ->
+  match signatureItem.sig_desc with
+  | Tsig_type (_, typeDeclarations) ->
     typeDeclarations
     |> List.exists
          (fun ({typ_attributes; typ_loc = loc} : Typedtree.type_declaration) ->
            typ_attributes |> checkAnnotation ~loc)
-  | {sig_desc = Tsig_value {val_attributes; val_loc = loc}} ->
+  | Tsig_value {val_attributes; val_loc = loc} ->
     val_attributes |> checkAnnotation ~loc
-  | {sig_desc = Tsig_module moduleDeclaration} ->
+  | Tsig_module moduleDeclaration ->
     moduleDeclaration |> moduleDeclarationCheckAnnotation ~checkAnnotation
-  | {sig_desc = Tsig_attribute attribute; sig_loc = loc} ->
-    [attribute] |> checkAnnotation ~loc
-  | _ -> false
+  | Tsig_attribute attribute ->
+    [attribute] |> checkAnnotation ~loc:signatureItem.sig_loc
+  | Tsig_modtype moduleTypeDeclaration ->
+    moduleTypeDeclaration
+    |> moduleTypeDeclarationCheckAnnotation ~checkAnnotation
+  | Tsig_typext _ | Tsig_exception _ | Tsig_recmodule _ | Tsig_open _
+  | Tsig_include _ | Tsig_class _ | Tsig_class_type _ ->
+    false
 
 and signatureCheckAnnotation ~checkAnnotation (signature : Typedtree.signature)
     =
@@ -200,7 +215,14 @@ let rec structureItemCheckAnnotation ~checkAnnotation
   | Tstr_include {incl_attributes; incl_mod; incl_loc = loc} ->
     incl_attributes |> checkAnnotation ~loc
     || incl_mod |> moduleExprCheckAnnotation ~checkAnnotation
-  | _ -> false
+  | Tstr_modtype moduleTypeDeclaration ->
+    moduleTypeDeclaration
+    |> moduleTypeDeclarationCheckAnnotation ~checkAnnotation
+  | Tstr_attribute attribute ->
+    [attribute] |> checkAnnotation ~loc:structureItem.str_loc
+  | Tstr_eval _ | Tstr_typext _ | Tstr_exception _ | Tstr_open _ | Tstr_class _
+  | Tstr_class_type _ ->
+    false
 
 and moduleExprCheckAnnotation ~checkAnnotation
     (moduleExpr : Typedtree.module_expr) =