diff --git a/Makefile.in b/Makefile.in
index 6217757c09d2b374bb50c40c467d971e123175d3..9c51b7c43bcd42aeee38eccb0803b153e2cdb756 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -12,6 +12,7 @@ all:
 	
 clean:
 	for i in ${dirs};  do cd $$i; make clean; cd ..; done
+	rm $(prefix)/bin/callbacks.exe
 
 install:
 	cp lib/callbacks.exe $(prefix)/bin/callbacks.exe