1 files changed, 4 insertions, 4 deletions
diff --git a/nixpkgs/doc/languages-frameworks/emscripten.section.md b/nixpkgs/doc/languages-frameworks/emscripten.section.md
index 8a47a7b320aa..d391e038070d 100644
--- a/nixpkgs/doc/languages-frameworks/emscripten.section.md
+++ b/nixpkgs/doc/languages-frameworks/emscripten.section.md
@@ -60,7 +60,7 @@ See the `zlib` example:
       stdenv = pkgs.emscriptenStdenv;
     }).overrideDerivation
     (old: rec {
-      buildInputs = old.buildInputs ++ [ pkgconfig ];
+      buildInputs = old.buildInputs ++ [ pkg-config ];
       # we need to reset this setting!
       NIX_CFLAGS_COMPILE="";
       configurePhase = ''
@@ -102,7 +102,7 @@ See the `zlib` example:
         echo "================= /testing zlib using node ================="
       '';
 
-      postPatch = pkgs.stdenv.lib.optionalString pkgs.stdenv.isDarwin ''
+      postPatch = pkgs.lib.optionalString pkgs.stdenv.isDarwin ''
         substituteInPlace configure \
           --replace '/usr/bin/libtool' 'ar' \
           --replace 'AR="libtool"' 'AR="ar"' \
@@ -117,8 +117,8 @@ This `xmlmirror` example features a emscriptenPackage which is defined completel
     xmlmirror = pkgs.buildEmscriptenPackage rec {
       name = "xmlmirror";
 
-      buildInputs = [ pkgconfig autoconf automake libtool gnumake libxml2 nodejs openjdk json_c ];
-      nativeBuildInputs = [ pkgconfig zlib ];
+      buildInputs = [ pkg-config autoconf automake libtool gnumake libxml2 nodejs openjdk json_c ];
+      nativeBuildInputs = [ pkg-config zlib ];
 
       src = pkgs.fetchgit {
         url = "https://gitlab.com/odfplugfest/xmlmirror.git";