diff --git a/pkgs/misc/lilypond/fonts.nix b/pkgs/misc/lilypond/fonts.nix
index d87e06235717..a23f7125f385 100644
--- a/pkgs/misc/lilypond/fonts.nix
+++ b/pkgs/misc/lilypond/fonts.nix
@@ -22,12 +22,12 @@ let
 
         for font in {otf,supplementary-fonts,supplementary-files}/**/*.{o,t}tf; do
           echo $font
-          install -Dt "$fontsdir/otf" -m755 "$font"
+          install -Dt "$fontsdir/otf" -m644 "$font"
         done
 
         install -m755 -d "$fontsdir/svg"
         for font in svg/**.{svg,woff}; do
-          install -Dt "$fontsdir/svg" -m755 "$font"
+          install -Dt "$fontsdir/svg" -m644 "$font"
         done
       '';