diff --git a/client/Doc b/client/progdoc
similarity index 100%
rename from client/Doc
rename to client/progdoc
diff --git a/conf/Doc b/conf/progdoc
similarity index 100%
rename from conf/Doc
rename to conf/progdoc
diff --git a/doc/Doc b/doc/progdoc
similarity index 100%
rename from doc/Doc
rename to doc/progdoc
diff --git a/filter/Doc b/filter/progdoc
similarity index 100%
rename from filter/Doc
rename to filter/progdoc
diff --git a/lib/Doc b/lib/progdoc
similarity index 100%
rename from lib/Doc
rename to lib/progdoc
diff --git a/nest/Doc b/nest/progdoc
similarity index 100%
rename from nest/Doc
rename to nest/progdoc
diff --git a/Doc b/progdoc
similarity index 100%
rename from Doc
rename to progdoc
diff --git a/proto/babel/Doc b/proto/babel/progdoc
similarity index 100%
rename from proto/babel/Doc
rename to proto/babel/progdoc
diff --git a/proto/bfd/Doc b/proto/bfd/progdoc
similarity index 100%
rename from proto/bfd/Doc
rename to proto/bfd/progdoc
diff --git a/proto/bgp/Doc b/proto/bgp/progdoc
similarity index 100%
rename from proto/bgp/Doc
rename to proto/bgp/progdoc
diff --git a/proto/ospf/Doc b/proto/ospf/progdoc
similarity index 100%
rename from proto/ospf/Doc
rename to proto/ospf/progdoc
diff --git a/proto/pipe/Doc b/proto/pipe/progdoc
similarity index 100%
rename from proto/pipe/Doc
rename to proto/pipe/progdoc
diff --git a/proto/Doc b/proto/progdoc
similarity index 100%
rename from proto/Doc
rename to proto/progdoc
diff --git a/proto/radv/Doc b/proto/radv/progdoc
similarity index 100%
rename from proto/radv/Doc
rename to proto/radv/progdoc
diff --git a/proto/rip/Doc b/proto/rip/progdoc
similarity index 100%
rename from proto/rip/Doc
rename to proto/rip/progdoc
diff --git a/proto/static/Doc b/proto/static/progdoc
similarity index 100%
rename from proto/static/Doc
rename to proto/static/progdoc
diff --git a/sysdep/Doc b/sysdep/progdoc
similarity index 100%
rename from sysdep/Doc
rename to sysdep/progdoc
diff --git a/sysdep/unix/Doc b/sysdep/unix/progdoc
similarity index 100%
rename from sysdep/unix/Doc
rename to sysdep/unix/progdoc
diff --git a/tools/progdoc b/tools/progdoc
index fc4024bf..9b27d14e 100755
--- a/tools/progdoc
+++ b/tools/progdoc
@@ -21,9 +21,9 @@ sub include {
 
 sub process {
   my $dir = shift @_;
-  print "$dir/Doc\n";
-  open(IN, "$dir/Doc") || die "Unable to read $dir/Doc";
-  push(@deps, "$dir/Doc");
+  print "$dir/progdoc\n";
+  open(IN, "$dir/progdoc") || die "Unable to read $dir/progdoc";
+  push(@deps, "$dir/progdoc");
   my @docfile = <IN>;
   close IN;
   foreach $_ (@docfile) {