diff --git a/pkgs/applications/misc/diffpdf/default.nix b/pkgs/applications/misc/diffpdf/default.nix
index 88952f5eb761..aefa4f755b8e 100644
--- a/pkgs/applications/misc/diffpdf/default.nix
+++ b/pkgs/applications/misc/diffpdf/default.nix
@@ -26,16 +26,18 @@ stdenv.mkDerivation rec {
     install -Dpm755 -D diffpdf $out/bin/diffpdf
     install -Dpm644 -D diffpdf.1 $out/share/man/man1/diffpdf.1
 
-    install -dpm755 $out/share/doc/${name} $out/share/licenses/${name} $out/share/pixmaps $out/share/applications
+    install -dpm755 $out/share/doc/${name} $out/share/licenses/${name} $out/share/icons $out/share/pixmaps $out/share/applications
     install -Dpm644 CHANGES README help.html $out/share/doc/${name}/
     install -Dpm644 gpl-2.0.txt $out/share/licenses/${name}/
-    install -Dpm644 images/icon.png $out/share/pixmaps/${name}.png
+    install -Dpm644 images/icon.png $out/share/icons/diffpdf.png
+    install -Dpm644 images/icon.png $out/share/pixmaps/diffpdf.png
 
     cat > $out/share/applications/diffpdf.desktop <<EOF
     [Desktop Entry]
     Type=Application
     Version=1.0
     Name=diffpdf
+    Icon=diffpdf
     Comment=PDF diffing tool
     Exec=$out/bin/diffpdf
     Terminal=false