diff --git a/examples/issue41_abstract_classes/Makefile b/examples/issue41_abstract_classes/Makefile
index 7dbee99c..ab57882d 100644
--- a/examples/issue41_abstract_classes/Makefile
+++ b/examples/issue41_abstract_classes/Makefile
@@ -2,20 +2,25 @@ FC = gfortran
 FCFLAGS = -fPIC
 PYTHON = python
 
-%.o : %.f90
-	${FC} ${FCFLAGS} -c $< -o $@
+all: wrapper test_abstract_classes.x
+
+test: wrapper
+	$(PYTHON) run.py
 
-all: myclass_base.o myclass_impl.o myclass_factory.o
+test_abstract_classes.x: main.f90 myclass_base.o myclass_impl.o myclass_factory.o
+	$(FC) $(FCFLAGS) -o $@ $^
+
+wrapper: myclass_base.o myclass_impl.o myclass_factory.o
 	f90wrap -m itest -P myclass_impl.f90 myclass_factory.f90 -v
 	f2py-f90wrap --build-dir . -c -m _itest \
 		f90wrap_myclass_impl.f90 f90wrap_myclass_factory.f90 \
 		myclass_base.o myclass_impl.o myclass_factory.o
 
-test: all
-	$(PYTHON) run.py
+%.o : %.f90
+	$(FC) $(FCFLAGS) -c $< -o $@
 
 clean:
-	rm -f *.o f90wrap*.f90 *.so *.mod
+	rm -f *.o f90wrap*.f90 *.so *.mod *.x
 	rm -rf src.*/
 	rm -rf itest/
 	-rm -rf src.*/ .f2py_f2cmap .libs/ __pycache__/
diff --git a/examples/issue41_abstract_classes/main.f90 b/examples/issue41_abstract_classes/main.f90
new file mode 100644
index 00000000..1a35cab5
--- /dev/null
+++ b/examples/issue41_abstract_classes/main.f90
@@ -0,0 +1,24 @@
+program main
+    use myclass_factory, only: create_myclass
+    use myclass_impl, only: myclass_impl_t
+    implicit none
+
+    print *, "Start"
+
+    call test()
+
+    print *, "Done"
+
+contains
+
+subroutine test
+    real :: x
+    class(myclass_impl_t), allocatable :: myobject
+
+    myobject = create_myclass("impl")
+    call myobject%get_value(x)
+
+    print *, "Value: ", x
+end subroutine test
+
+end program main
diff --git a/examples/issue41_abstract_classes/myclass_impl.f90 b/examples/issue41_abstract_classes/myclass_impl.f90
index 43cf4c2a..a7cab804 100644
--- a/examples/issue41_abstract_classes/myclass_impl.f90
+++ b/examples/issue41_abstract_classes/myclass_impl.f90
@@ -6,6 +6,7 @@ module myclass_impl
 type, extends(myclass_t) :: myclass_impl_t
 contains
     procedure :: get_value => get_value_impl
+    final :: myclass_impl_finalise
 end type myclass_impl_t
 
 contains
@@ -17,4 +18,10 @@ subroutine get_value_impl(self, value)
     value = 1.0
 end subroutine get_value_impl
 
+subroutine myclass_impl_finalise(self)
+    type(myclass_impl_t), intent(inout) :: self
+
+    print *, "Finalizing myclass_impl_t"
+end subroutine myclass_impl_finalise
+
 end module myclass_impl
diff --git a/examples/issue41_abstract_classes/run.py b/examples/issue41_abstract_classes/run.py
index 195ad8a0..2f9dfcb9 100644
--- a/examples/issue41_abstract_classes/run.py
+++ b/examples/issue41_abstract_classes/run.py
@@ -5,4 +5,6 @@
 TOL = 1.0e-14
 
 obj = itest.myclass_factory.create_myclass("impl")
-assert(abs(obj.get_value()-REF)<TOL)
+output = obj.get_value()
+assert(abs(output-REF)<TOL)
+print(f"OK: {output} == {REF}")