diff --git a/Makefile b/Makefile
index ce18c20b..16b492e2 100644
--- a/Makefile
+++ b/Makefile
@@ -11,7 +11,7 @@ CHIBI_DOC_DEPENDENCIES ?= $(CHIBI_DEPENDENCIES) tools/chibi-doc
 
 GENSTATIC ?= ./tools/chibi-genstatic
 
-CHIBI ?= LD_LIBRARY_PATH=".:$(LD_LIBRARY_PATH)" ./chibi-scheme$(EXE)
+CHIBI ?= LD_LIBRARY_PATH=".:$(LD_LIBRARY_PATH)" CHIBI_MODULE_PATH=lib ./chibi-scheme$(EXE)
 CHIBI_DEPENDENCIES = ./chibi-scheme$(EXE)
 
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