--- a/Makefile
+++ b/Makefile
@@ -8,7 +8,7 @@
 install: _build/install/default/bin/orpie _build/install/default/bin/orpie-curses-keys
 	ORPIE_PREFIX=`scripts/compute_prefix eval` && \
 	mkdir -p "$(DESTDIR)/$$ORPIE_PREFIX" && \
-	dune install --prefix="$(DESTDIR)/$$ORPIE_PREFIX"
+	dune install --prefix="$$ORPIE_PREFIX"
 
 clean:
 	dune clean
