diff --git a/mac80211_hwsim/tools/Makefile b/mac80211_hwsim/tools/Makefile
index ec0d2dc91..fb29d8d23 100644
--- a/mac80211_hwsim/tools/Makefile
+++ b/mac80211_hwsim/tools/Makefile
@@ -9,3 +9,7 @@ CFLAGS = -O2 -Wall -g
 endif
 
 hwsim_test: hwsim_test.o
+
+clean:
+	rm -rf *.o
+	rm -rf hwsim_test
diff --git a/tests/hwsim/build.sh b/tests/hwsim/build.sh
index a65ff593e..d7d5f410d 100755
--- a/tests/hwsim/build.sh
+++ b/tests/hwsim/build.sh
@@ -20,4 +20,5 @@ cd ../wlantest
 make clean
 make -j8
 cd ../mac80211_hwsim/tools
+make clean
 make -j8