diff --git a/lib/ann/fann/Makefile.am b/lib/ann/fann/Makefile.am
index a9e9717..1c39228 100644
--- a/lib/ann/fann/Makefile.am
+++ b/lib/ann/fann/Makefile.am
@@ -1,6 +1,6 @@
-all:
+all: clean-local
 	-mkdir build
 	cd build && cmake .. && make
 
 clean-local:
-	-rm -rf build
\ No newline at end of file
+	-rm -rf build