diff --git a/Makefile b/Makefile
index 580b2f412a4228e89e16e0d636e204cb233b107b..6023ebadede0dc2d43cf93e633e97a9210f77ead 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,8 @@ rebuild:
 	./gradlew shadowJar
 install:
 	./gradlew installKernelSpec
-PHOME=/Users/NAME/git_root/prob_prolog
+USERNAME=
+PHOME=/Users/$(USERNAME)/git_root/prob_prolog
 installph:
 	./gradlew -PprobHome=$(PHOME) installKernelSpec