diff --git a/pkgs/applications/audio/vcv-rack/default.nix b/pkgs/applications/audio/vcv-rack/default.nix
index 74e041868db..27533084804 100644
--- a/pkgs/applications/audio/vcv-rack/default.nix
+++ b/pkgs/applications/audio/vcv-rack/default.nix
@@ -3,8 +3,9 @@
 , libzip, rtaudio, rtmidi, speex }:
 
 let
-  glfw-git = glfw.overrideAttrs (oldAttrs: {
-    name = "glfw-git-20180529";
+  glfw-git = glfw.overrideAttrs (oldAttrs: rec {
+    name = "glfw-git-${version}";
+    version = "unstable-2018-05-29";
     src = fetchFromGitHub {
       owner = "glfw";
       repo = "glfw";
diff --git a/pkgs/misc/drivers/epkowa/default.nix b/pkgs/misc/drivers/epkowa/default.nix
index 3359f9e94ac..643977d829d 100644
--- a/pkgs/misc/drivers/epkowa/default.nix
+++ b/pkgs/misc/drivers/epkowa/default.nix
@@ -26,7 +26,7 @@ in
 
 let plugins = {
   x770 =   stdenv.mkDerivation rec {
-    name = "iscan-gt-x770-bundle";
+    pname = "iscan-gt-x770-bundle";
     version = "1.0.1";
     pluginVersion = "2.1.2-1";
 
@@ -58,7 +58,7 @@ let plugins = {
     meta = common_meta // { description = "iscan esci x770 plugin for "+passthru.hw; };
     };
   f720 = stdenv.mkDerivation rec {
-    name = "iscan-gt-f720-bundle";
+    pname = "iscan-gt-f720-bundle";
     version = "1.0.1";
     pluginVersion = "0.1.1-2";