diff --git a/fonts/Makefile b/fonts/Makefile
index d802e6e..a0ee2e9 100644
--- a/fonts/Makefile
+++ b/fonts/Makefile
@@ -24,14 +24,17 @@
 # TEXMFLOCAL =
 FONTS = $(TEXMFLOCAL)/fonts
 
+# Use rsync so we don't clobber anything that's already there, and only copy
+# what's absolutely necessary. Don't use rsync -a as we don't want to preserve
+# the group (-g) and owner (-a) if we're writing into a system directory.
 install:
 	@cp 99local.cfg $(UPDMAP)
-	@rsync -av afm $(FONTS)
-	@rsync -av map $(FONTS)
-	@rsync -av tfm $(FONTS)
-	@rsync -av truetype $(FONTS)
-	@rsync -av type1 $(FONTS)
-	@rsync -av vf $(FONTS)
+	@rsync -rlptDv afm $(FONTS)
+	@rsync -rlptDv map $(FONTS)
+	@rsync -rlptDv tfm $(FONTS)
+	@rsync -rlptDv truetype $(FONTS)
+	@rsync -rlptDv type1 $(FONTS)
+	@rsync -rlptDv vf $(FONTS)
 	@texhash
 	@updmap-sys