diff --git a/Makefile b/Makefile
index 2119479..b01c175 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
-all:
-
 SOURCES=CAN.cpp CAN.h mcp2515.cpp mcp2515.h mcp2515_regs.h my_spi.h spi.cpp
 
+all: doc mainpage.dox
+
 doc: mainpage.dox doxyconfig $(SOURCES)
 	doxygen doxyconfig