2 files changed, 2 insertions, 2 deletions
diff --git a/pkgs/development/perl-modules/BerkeleyDB/default.nix b/pkgs/development/perl-modules/BerkeleyDB/default.nix
index 1e94e5da8fed8..8dd44e1e201ca 100644
--- a/pkgs/development/perl-modules/BerkeleyDB/default.nix
+++ b/pkgs/development/perl-modules/BerkeleyDB/default.nix
@@ -1,6 +1,6 @@
 {stdenv, fetchurl, perl, db4}:
 
-assert !isNull perl && !isNull db4;
+assert perl != null && db4 != null;
 
 derivation {
   name = "perl-BerkeleyDB-0.25";
diff --git a/pkgs/development/perl-modules/XML-Parser/default.nix b/pkgs/development/perl-modules/XML-Parser/default.nix
index 0c0311962ba19..79bad03171eca 100644
--- a/pkgs/development/perl-modules/XML-Parser/default.nix
+++ b/pkgs/development/perl-modules/XML-Parser/default.nix
@@ -1,6 +1,6 @@
 {stdenv, fetchurl, perl, expat}:
 
-assert !isNull perl && !isNull expat;
+assert perl != null && expat != null;
 
 derivation {
   name = "perl-XML-Parser-2.34";