diff --git a/pkgs/tools/typesetting/tex/pgf/1.x.nix b/pkgs/tools/typesetting/tex/pgf/1.x.nix
index de5ef2abccf..9215a1e0ac4 100644
--- a/pkgs/tools/typesetting/tex/pgf/1.x.nix
+++ b/pkgs/tools/typesetting/tex/pgf/1.x.nix
@@ -15,8 +15,9 @@ stdenv.mkDerivation {
     cp -prd * $out/share/texmf-nix
   ";
 
-  meta = {
+  meta = with stdenv.lib; {
     branch = "1";
-    platforms = stdenv.lib.platforms.unix;
+    platforms = platforms.unix;
+    license = licenses.gpl2;
   };
 }
diff --git a/pkgs/tools/typesetting/tex/pgf/2.x.nix b/pkgs/tools/typesetting/tex/pgf/2.x.nix
index cb8d2dbdf48..56e50e44408 100644
--- a/pkgs/tools/typesetting/tex/pgf/2.x.nix
+++ b/pkgs/tools/typesetting/tex/pgf/2.x.nix
@@ -15,8 +15,9 @@ stdenv.mkDerivation {
     cp -prd * $out/share/texmf-nix
   ";
 
-  meta = {
+  meta = with stdenv.lib; {
     branch = "2";
-    platforms = stdenv.lib.platforms.unix;
+    platforms = platforms.unix;
+    license = licenses.gpl2;
   };
 }
diff --git a/pkgs/tools/typesetting/tex/pgf/3.x.nix b/pkgs/tools/typesetting/tex/pgf/3.x.nix
index 28225ebf28a..0835c7c547d 100644
--- a/pkgs/tools/typesetting/tex/pgf/3.x.nix
+++ b/pkgs/tools/typesetting/tex/pgf/3.x.nix
@@ -24,8 +24,9 @@ stdenv.mkDerivation {
     cp -prd * $out/share/texmf-nix
   ";
 
-  meta = {
+  meta = with stdenv.lib; {
     branch = "3";
-    platforms = stdenv.lib.platforms.unix;
+    platforms = platforms.unix;
+    license = licenses.gpl2;
   };
 }