diff --git a/autofff/generator.py b/autofff/generator.py
index 09fb5c6..34d6bda 100644
--- a/autofff/generator.py
+++ b/autofff/generator.py
@@ -54,7 +54,10 @@ def _generateTypeDefForDecl(self, decl: Decl) -> str:
         ):
             name = utils.create_typedef_name_for_fnc_ptr(decl, param)
 
-            param.type.type.type.declname = name
+            type = param.type.type.type
+            while not hasattr(type, "declname"):
+                type = type.type
+            type.declname = name
             typedef = Typedef(name, param.quals, ["typedef"], param.type)
 
             param.type = TypeDecl(
diff --git a/examples/simple-headers/driver.h b/examples/simple-headers/driver.h
index 5574b59..271444d 100644
--- a/examples/simple-headers/driver.h
+++ b/examples/simple-headers/driver.h
@@ -36,6 +36,9 @@ void Driver_PowerUp(Config (*config_cb)(void *arg));
 
 void Driver_PowerDown(void);
 
+/* Showcasing in-line function pointer parameters that return pointer */
+void Driver_Register_Callback(void *(*cb)(void *arg));
+
 int Driver_Deinitialize(void);
 
 /* Showcasing inline definition workaround */