diff --git a/bin/automake.in b/bin/automake.in
index f249064d5..73865a67c 100644
--- a/bin/automake.in
+++ b/bin/automake.in
@@ -4610,6 +4610,8 @@ sub handle_all
     my @local_headers = ();
     push @local_headers, '$(BUILT_SOURCES)'
       if var ('BUILT_SOURCES');
+    push @local_headers, '$(prog_PYTHON)'
+      if var ('prog_PYTHON');
     foreach my $spec (@config_headers)
       {
 	my ($out, @ins) = split_config_file_spec ($spec);