diff --git a/pkgs/servers/search/groonga/default.nix b/pkgs/servers/search/groonga/default.nix
index f69b3637f95..2d9f6b11b27 100644
--- a/pkgs/servers/search/groonga/default.nix
+++ b/pkgs/servers/search/groonga/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
     description = "An open-source fulltext search engine and column store";
     license     = licenses.lgpl21;
     maintainers = [ maintainers.ericsagnes ];
-    platforms   = platforms.linux;
+    platforms   = platforms.unix;
     longDescription = ''
       Groonga is an open-source fulltext search engine and column store. 
       It lets you write high-performance applications that requires fulltext search.
diff --git a/pkgs/tools/text/kytea/default.nix b/pkgs/tools/text/kytea/default.nix
index eb537c67a63..7254660cb1a 100644
--- a/pkgs/tools/text/kytea/default.nix
+++ b/pkgs/tools/text/kytea/default.nix
@@ -12,6 +12,8 @@ stdenv.mkDerivation rec {
 
   patches = [ ./gcc-O3.patch ];
 
+  NIX_CFLAGS_COMPILE = stdenv.lib.optionalString stdenv.cc.isClang "-Wno-error=c++11-narrowing";
+
   meta = with stdenv.lib; {
     homepage = http://www.phontron.com/kytea/;
     description = "General toolkit developed for analyzing text";
@@ -24,7 +26,7 @@ stdenv.mkDerivation rec {
     license = licenses.asl20;
 
     maintainers = with maintainers; [ ericsagnes ndowens ];
-    platforms = platforms.linux;
+    platforms = platforms.unix;
   };
 
 }