diff --git a/README.md b/README.md
index 671c370..6a519f0 100644
--- a/README.md
+++ b/README.md
@@ -85,7 +85,7 @@ The compiled "tek4010" program is for a Raspberry Pi. If you are on Ubuntu, do t
 the program. On the Raspberry Pi you can skip this step.
 
 	sudo apt-get install libgtk-3-dev
-	rm tek4010
+	make clean
 	make
         
 Thanks to Lars Brinkhoff (lars@nocrew.org) to pointing out how easy it is to compile tek4010
diff --git a/makefile b/makefile
index 5ae1239..60c8959 100644
--- a/makefile
+++ b/makefile
@@ -9,3 +9,7 @@ tek4010: main.c main.h tube.c tube.h tek4010.c ards.c
 
 install: tek4010
 	./install
+
+.PHONY : clean
+clean :
+	-rm -f tek4010