diff --git a/Makefile b/Makefile
index 09345d8..2b393a2 100644
--- a/Makefile
+++ b/Makefile
@@ -3,12 +3,13 @@
 
 COFFEE_SRC = src
 COFFEE_OUT = .
+BIN = ./node_modules/.bin
 
 build:
-	coffee -c -o $(COFFEE_OUT) $(COFFEE_SRC)
+	$(BIN)/coffee -c -o $(COFFEE_OUT) $(COFFEE_SRC)
 
 watch:
-	coffee -cw -o $(COFFEE_OUT) $(COFFEE_SRC)
+	$(BIN)/coffee -cw -o $(COFFEE_OUT) $(COFFEE_SRC)
 
 docs:
-	docco $(shell find $(COFFEE_SRC) -name '*.coffee')
+	$(BIN)/docco $(shell find $(COFFEE_SRC) -name '*.coffee')