diff --git a/Basic/Bad/Makefile.PL b/Basic/Bad/Makefile.PL
index 6b7b64231..6cf767f1c 100644
--- a/Basic/Bad/Makefile.PL
+++ b/Basic/Bad/Makefile.PL
@@ -6,7 +6,6 @@ use File::Spec::Functions;
 my @pack = (["bad.pd",qw(Bad PDL::Bad)]);
 
 my %hash = pdlpp_stdargs_int(@pack);
-$hash{depend} = { 'Bad$(OBJ_EXT)' => catfile(updir, qw(lib PDL Core pdlperl.h)) };
 
 undef &MY::postamble; # suppress warning
 *MY::postamble = sub {
diff --git a/Basic/Makefile.PL b/Basic/Makefile.PL
index 77bb0268d..c58fd3cd9 100644
--- a/Basic/Makefile.PL
+++ b/Basic/Makefile.PL
@@ -21,7 +21,7 @@ EOT
   my $typespm = catfile(qw(lib PDL Types.pm));
   for (qw(pdl.h pdlperl.h)) {
     my $base = "lib/PDL/Core/$_"; # no catfile as init_PM uses File::Find which normalises to /
-    $text .= "$base :: $typespm\n\t\$(PERLRUN) $base.PL $base\n";
+    $text .= "$base :: $base.PL $typespm\n\t\$(PERLRUN) $base.PL $base\n";
   }
   $text .= "\n" . ::coretarget($self);
   my $coretest = join ' ', map catfile('t', $_.'.t'), qw(
diff --git a/Basic/lib/PDL/Core/Dev.pm b/Basic/lib/PDL/Core/Dev.pm
index 46eb17320..ccd829576 100644
--- a/Basic/lib/PDL/Core/Dev.pm
+++ b/Basic/lib/PDL/Core/Dev.pm
@@ -224,6 +224,11 @@ sub _stdargs {
   } else {
     %hash = (%hash, OBJECT => "$pref\$(OBJ_EXT)");
   }
+  if ($internal) {
+    $hash{depend} = {
+      "$pref\$(OBJ_EXT)" => File::Spec::Functions::abs2rel(catfile($w, qw(PDL Core pdlperl.h))),
+    };
+  }
   (
     NAME  	=> $mod,
     VERSION_FROM => ($internal ? catfile(dirname($w), qw(lib PDL Core.pm)) : $src),