diff --git a/pkgs/applications/misc/masterpdfeditor/default.nix b/pkgs/applications/misc/masterpdfeditor/default.nix
index ac6cf2b91c69..3155ab678d86 100644
--- a/pkgs/applications/misc/masterpdfeditor/default.nix
+++ b/pkgs/applications/misc/masterpdfeditor/default.nix
@@ -1,11 +1,14 @@
 { stdenv, fetchurl, sane-backends, qtbase, qtsvg, nss, autoPatchelfHook }:
+
 let
-  version = "5.1.00";
+  version = "5.1.12";
+
 in stdenv.mkDerivation {
   name = "masterpdfeditor-${version}";
+
   src = fetchurl {
     url = "https://code-industry.net/public/master-pdf-editor-${version}_qt5.amd64.tar.gz";
-    sha256 = "1s2zhx9xr1ny5s8hmlb99v3z1v26vmx87iixk8cdgndz046p9bg9";
+    sha256 = "1i3pdrhnlj06phm36gs42s6b94pigcfb8wa5dhmplxn0dqp434hq";
   };
 
   nativeBuildInputs = [ autoPatchelfHook ];
@@ -15,21 +18,24 @@ in stdenv.mkDerivation {
   dontStrip = true;
 
   installPhase = ''
-   p=$out/opt/masterpdfeditor
-   mkdir -p $out/bin $p $out/share/applications $out/share/pixmaps
+    runHook preInstall
 
-   substituteInPlace masterpdfeditor5.desktop \
-     --replace 'Exec=/opt/master-pdf-editor-5' "Exec=$out/bin" \
-     --replace 'Path=/opt/master-pdf-editor-5' "Path=$out/bin" \
-     --replace 'Icon=/opt/master-pdf-editor-5' "Icon=$out/share/pixmaps"
-   cp -v masterpdfeditor5.png $out/share/pixmaps/
-   cp -v masterpdfeditor5.desktop $out/share/applications
+    p=$out/opt/masterpdfeditor
+    mkdir -p $out/bin
 
-   cp -v masterpdfeditor5 $p/
-   ln -s $p/masterpdfeditor5 $out/bin/masterpdfeditor5
-   cp -v -r stamps templates lang fonts $p
+    substituteInPlace masterpdfeditor5.desktop \
+      --replace 'Exec=/opt/master-pdf-editor-5' "Exec=$out/bin" \
+      --replace 'Path=/opt/master-pdf-editor-5' "Path=$out/bin" \
+      --replace 'Icon=/opt/master-pdf-editor-5' "Icon=$out/share/pixmaps"
 
-   install -D license.txt $out/share/$name/LICENSE
+    install -Dm644 -t $out/share/pixmaps      masterpdfeditor5.png
+    install -Dm644 -t $out/share/applications masterpdfeditor5.desktop
+    install -Dm755 -t $p                      masterpdfeditor5
+    install -Dm644 license.txt $out/share/$name/LICENSE
+    ln -s $p/masterpdfeditor5 $out/bin/masterpdfeditor5
+    cp -v -r stamps templates lang fonts $p
+
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {