diff --git a/pkgs/development/libraries/audiofile/default.nix b/pkgs/development/libraries/audiofile/default.nix
index 57ca21885dd8..2f4de88c94c2 100644
--- a/pkgs/development/libraries/audiofile/default.nix
+++ b/pkgs/development/libraries/audiofile/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "A library for reading and writing audio files in various formats";
     homepage    = http://www.68k.org/~michael/audiofile/; 
-    license     = licenses.lgpl21;
+    license     = licenses.lgpl21Plus;
     maintainers = with maintainers; [ lovek323 shlevy ];
     platforms   = platforms.unix;
   };
diff --git a/pkgs/development/libraries/pangomm/2.28.x.nix b/pkgs/development/libraries/pangomm/2.28.x.nix
index 411b969cb242..d03aa4311fe0 100644
--- a/pkgs/development/libraries/pangomm/2.28.x.nix
+++ b/pkgs/development/libraries/pangomm/2.28.x.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "C++ interface to the Pango text rendering library";
     homepage    = http://www.pango.org/;
-    license     = licenses.lgpl2Plus;
+    license     = with licenses; [ lgpl2 lgpl21 ];
     maintainers = with maintainers; [ lovek323 raskin ];
     platforms   = platforms.unix;
 
diff --git a/pkgs/development/libraries/xvidcore/default.nix b/pkgs/development/libraries/xvidcore/default.nix
index b4d44be17386..fd5efdcc3d1b 100644
--- a/pkgs/development/libraries/xvidcore/default.nix
+++ b/pkgs/development/libraries/xvidcore/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "MPEG-4 video codec for PC";
     homepage    = http://www.xvid.org/;
-    license     = licenses.gpl2Plus;
+    license     = licenses.gpl2;
     maintainers = with maintainers; [ lovek323 ];
     platforms   = platforms.all;
   };
diff --git a/pkgs/development/python-modules/python-sip/default.nix b/pkgs/development/python-modules/python-sip/default.nix
index 076cba1fad29..6d79cf53a6b5 100644
--- a/pkgs/development/python-modules/python-sip/default.nix
+++ b/pkgs/development/python-modules/python-sip/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   
   meta = with stdenv.lib; {
     description = "Creates C++ bindings for Python modules";
-    license     = licenses.gpl3Plus;
+    license     = licenses.gpl2Plus;
     maintainers = with maintainers; [ lovek323 sander urkud ];
     platforms   = platforms.all;
   };