diff --git a/src/lisp/Jmk b/src/lisp/Jmk
index 7c1fe8e..628a33d 100644
--- a/src/lisp/Jmk
+++ b/src/lisp/Jmk
@@ -38,14 +38,15 @@
 type(executable)
 
 F ?= test.lisp
+lisp_libpath = $(ROOT)/lib/lisp
 
 run: lisp
 	status_log(LISP, $(F))
-	@./lisp $(F)
+	@LISP_LIBRARY_PATH="$(lisp_libpath)" ./lisp $(F)
 
 leak-check: lisp
 	status_log(VALGRIND, lisp $(F))
-	@valgrind --leak-check=full ./lisp $(F)
+	@LISP_LIBRARY_PATH="$(lisp_libpath)" valgrind --leak-check=full ./lisp $(F)
 
 format:
 	status_log(FORMAT, *)