diff --git a/bin/pm/make_makefile.pm b/bin/pm/make_makefile.pm
index a3deb7a1..5482dcf4 100644
--- a/bin/pm/make_makefile.pm
+++ b/bin/pm/make_makefile.pm
@@ -668,7 +668,10 @@ clean: tidy clean_obj clean_model_io_src clean_lex_yacc_src
 real_clean: clean
 
 spotless: clean
-\t@ echo \"Removed all S_mains\"\n" ;
+\t@ echo \"Removed all S_mains\"
+
+distclean: clean
+\t-rm -f makefile\n" ;
 
     foreach $k ( sort keys %files_by_dir ) {
         if ($files_by_dir{$k}{"writable"}) {
@@ -786,7 +789,7 @@ clean_obj: clean_model_c_obj clean_model_cpp_obj clean_model_io_obj clean_lex_ya
         print MAKEFILE "\t@ mkdir -p \$\@\n" ;
     }
 
-    print MAKEFILE "\napocalypse: spotless\n" ;
+    print MAKEFILE "\napocalypse: distclean\n" ;
     foreach my $l ( @{$$sim_ref{sim_libraries}} ) {
         print MAKEFILE "\t- \$(MAKE) -C $l spotless\n" ;
     }
diff --git a/makefiles/Makefile.sim b/makefiles/Makefile.sim
index c1038135..2188cce8 100644
--- a/makefiles/Makefile.sim
+++ b/makefiles/Makefile.sim
@@ -39,9 +39,12 @@ S_define:
 model_dirs:
 	@${TRICK_HOME}/bin/C3PO -z
 
-tidy clean real_clean spotless apocalypse sie ICG force_ICG help convert_swig S_define_exp:
+tidy clean real_clean spotless sie ICG force_ICG help convert_swig S_define_exp:
 	@if [ -f Makefile_sim ] ; then $(MAKE) --no-print-directory -f Makefile_sim $@ ; else echo "No Makefile_sim found" ; fi
 
+distclean apocalypse:
+	@if [ -f Makefile_sim ] ; then $(MAKE) --no-print-directory -f Makefile_sim $@ ; else rm makefile; fi
+
 # Dependencies to other files that may cause a re-CP
 -include object_${TRICK_HOST_CPU}/S_define.deps