diff --git a/ghc/utils/mkdependHS/mkdependHS.prl b/ghc/utils/mkdependHS/mkdependHS.prl
index da0e0bcaf096b38b5841117ec09f6cab7e4e55ac..93d08b378a5421da68811ed348b9de2afc4accd9 100644
--- a/ghc/utils/mkdependHS/mkdependHS.prl
+++ b/ghc/utils/mkdependHS/mkdependHS.prl
@@ -376,11 +376,7 @@ sub preprocess_import_dirs {
 	for ($_ = readdir(DIR); $_; $_ = readdir(DIR)) {
 	    next unless /(.*)\.hi$/;
 	    $thing = $1;
- 	    # 
- 	    # dLL_ifs.hi is used to indicate whether a directory
- 	    # contains interface files whose object codes reside in a Win32 DLL.
- 	    # 
-	    if ($ModuleIn{$thing} && $ModuleIn{$thing} ne $d && $thing ne 'dLL_ifs') {
+	    if ($ModuleIn{$thing} && $ModuleIn{$thing} ne $d) {
 		print STDERR "$Pgm: warning: $thing.hi appears in both $ModuleIn{$thing} and $d!\n" if ($Warnings);
 	    } else {
 		$ModuleIn{$thing} = $d;