diff --git a/pkgs/development/guile-modules/guile-cairo/default.nix b/pkgs/development/guile-modules/guile-cairo/default.nix
index d4deea047ef..f8ff52e5ab8 100644
--- a/pkgs/development/guile-modules/guile-cairo/default.nix
+++ b/pkgs/development/guile-modules/guile-cairo/default.nix
@@ -1,4 +1,4 @@
-{ fetchurl, stdenv, guile, pkgconfig, cairo, guileLib }:
+{ fetchurl, stdenv, guile, pkgconfig, cairo, guile_lib }:
 
 stdenv.mkDerivation rec {
   name = "guile-cairo-1.4.0";
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
   };
 
   buildInputs = [ guile pkgconfig cairo ]
-    ++ stdenv.lib.optional doCheck guileLib;
+    ++ stdenv.lib.optional doCheck guile_lib;
 
   doCheck = true;
 
diff --git a/pkgs/development/guile-modules/guile-gnome/default.nix b/pkgs/development/guile-modules/guile-gnome/default.nix
index 40074e743b1..b6a7a43297c 100644
--- a/pkgs/development/guile-modules/guile-gnome/default.nix
+++ b/pkgs/development/guile-modules/guile-gnome/default.nix
@@ -1,4 +1,4 @@
-{ fetchurl, stdenv, guile, guileLib, gwrap
+{ fetchurl, stdenv, guile, guile_lib, gwrap
 , pkgconfig, gconf, glib, gnomevfs, gtk
 , libglade, libgnome, libgnomecanvas, libgnomeui, pango, guileCairo }:
 
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
       pkgconfig gconf glib gnomevfs gtk libglade libgnome libgnomecanvas
       libgnomeui pango guileCairo
     ]
-    ++ stdenv.lib.optional doCheck guileLib;
+    ++ stdenv.lib.optional doCheck guile_lib;
 
   # The test suite tries to open an X display, which fails.
   doCheck = false;
diff --git a/pkgs/development/tools/guile/g-wrap/default.nix b/pkgs/development/tools/guile/g-wrap/default.nix
index fe926e8ace5..8698dc27b40 100644
--- a/pkgs/development/tools/guile/g-wrap/default.nix
+++ b/pkgs/development/tools/guile/g-wrap/default.nix
@@ -1,5 +1,5 @@
 { fetchurl, stdenv, guile, libffi, pkgconfig, glib
-, guileLib }:
+, guile_lib }:
 
 stdenv.mkDerivation rec {
   name = "g-wrap-1.9.13";
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
   # Note: Glib support is optional, but it's quite useful (e.g., it's
   # used by Guile-GNOME).
   buildInputs = [ guile pkgconfig glib ]
-    ++ stdenv.lib.optional doCheck guileLib;
+    ++ stdenv.lib.optional doCheck guile_lib;
 
   propagatedBuildInputs = [ libffi ];