diff --git a/guix/import/hackage.scm b/guix/import/hackage.scm
index 6e982366cf..878a7d2f9c 100644
--- a/guix/import/hackage.scm
+++ b/guix/import/hackage.scm
@@ -227,9 +227,10 @@ (define (filter-dependencies dependencies own-names)
 list with the names of dependencies.  OWN-NAMES is the name of the Cabal
 package being processed and its internal libaries and is used to filter
 references to itself."
-  (filter (lambda (d) (not (member (string-downcase d)
+  (let ((ignored-dependencies (map string-downcase
                                    (append own-names ghc-standard-libraries))))
-          dependencies))
+    (filter (lambda (d) (not (member (string-downcase d) ignored-dependencies)))
+            dependencies)))
 
 (define* (hackage-module->sexp cabal cabal-hash
                                #:key (include-test-dependencies? #t))
@@ -250,7 +251,8 @@ (define source-url
     (hackage-source-url name version))
 
   (define own-names (cons (cabal-package-name cabal)
-                          (map cabal-library-name (cabal-package-library cabal))))
+                          (filter (lambda (x) (not (eqv? x #f)))
+                            (map cabal-library-name (cabal-package-library cabal)))))
 
   (define hackage-dependencies
     (filter-dependencies (cabal-dependencies->names cabal) own-names))
diff --git a/tests/hackage.scm b/tests/hackage.scm
index a11dd14846..ad2ee4b7f9 100644
--- a/tests/hackage.scm
+++ b/tests/hackage.scm
@@ -368,7 +368,8 @@ (define test-cabal-no-final-newline
 (test-assert "hackage->guix-package test without final newline"
   (eval-test-with-cabal test-cabal-no-final-newline match-ghc-foo))
 
-;; Make sure internal libraries will not be part of the dependencies.
+;; Make sure internal libraries will not be part of the dependencies,
+;; ignore case.
 (define test-cabal-internal-library-ignored
   "name: foo
 version: 1.0.0
@@ -379,8 +380,8 @@ (define test-cabal-internal-library-ignored
 executable cabal
   build-depends:
     HTTP       >= 4000.2.5 && < 4000.3,
-    internal
-library internal
+    internAl
+library internaL
   build-depends: mtl        >= 2.0      && < 3
 ")