diff --git a/pkgs/by-name/pe/peazip/package.nix b/pkgs/by-name/pe/peazip/package.nix
index 06baea3e7fa4..6604103f89e9 100644
--- a/pkgs/by-name/pe/peazip/package.nix
+++ b/pkgs/by-name/pe/peazip/package.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   postPatch = ''
     # set it to use compression programs from $PATH
-    substituteInPlace dev/peach.pas --replace "  HSYSBIN       = 0;" "  HSYSBIN       = 2;"
+    substituteInPlace dev/peach.pas --replace-fail "  HSYSBIN       = 0;" "  HSYSBIN       = 2;"
   '';
 
   nativeBuildInputs = [
@@ -96,12 +96,27 @@ stdenv.mkDerivation (finalAttrs: {
     install -D res/share/batch/freedesktop_integration/KDE-servicemenus/KDE3-konqueror/*.desktop -t $out/share/apps/konqueror/servicemenus
 
     # Install desktop entries's icons
-    mkdir -p $out/share/icons/hicolor/256x256/apps
-    ln -s $out/share/peazip/icons/peazip.png -t $out/share/icons/hicolor/256x256/apps/
-    mkdir $out/share/icons/hicolor/256x256/mimetypes
-    ln -s $out/share/peazip/icons/peazip_{7z,zip,cd}.png $out/share/icons/hicolor/256x256/mimetypes/
-    mkdir $out/share/icons/hicolor/256x256/actions
-    ln -s $out/share/peazip/icons/peazip_{add,extract,convert}.png $out/share/icons/hicolor/256x256/actions/
+    for size in {48,256}; do
+      mkdir -p $out/share/icons/hicolor/"$size"x"$size"/apps
+      mkdir $out/share/icons/hicolor/"$size"x"$size"/mimetypes
+      mkdir $out/share/icons/hicolor/"$size"x"$size"/actions
+    done
+
+    pushd res/share/batch/freedesktop_integration
+
+    cp peazip.png $out/share/icons/hicolor/256x256/apps/
+    pushd additional-desktop-files
+    cp peazip_{7z,cd,zip}.png $out/share/icons/hicolor/256x256/mimetypes/
+    cp peazip_{add,extract,convert}.png $out/share/icons/hicolor/256x256/actions/
+    popd
+
+    pushd alternative-icons/48px
+    # for some reason the maintainer only made 48px version of *some* icons
+    cp peazip.png $out/share/icons/hicolor/48x48/apps/
+    cp peazip_{add,extract}.png $out/share/icons/hicolor/48x48/actions/
+    popd
+
+    popd
 
     runHook postInstall
   '';