diff --git a/firefox.spec b/firefox.spec
index d5b3a3b..48e9df4 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -321,7 +321,6 @@ BuildRequires:  libjpeg-devel
 BuildRequires:  zip
 BuildRequires:  bzip2-devel
 BuildRequires:  pkgconfig(zlib)
-BuildRequires:  pkgconfig(libIDL-2.0)
 BuildRequires:  pkgconfig(gtk+-2.0)
 BuildRequires:  krb5-devel
 BuildRequires:  pkgconfig(pango)