diff --git a/src/testdir/Makefile b/src/testdir/Makefile
index 92506e6..7f9ef04 100644
--- a/src/testdir/Makefile
+++ b/src/testdir/Makefile
@@ -100,6 +100,7 @@
 	-rm -f opt_test.vim test.log test_result.log messages
 	-rm -f $(RM_ON_RUN) $(RM_ON_START)
 	-rm -f valgrind.*
+	-rm -f asan.*
 
 test1.out: test1.in
 	-rm -rf $*.failed $(RM_ON_RUN) $(RM_ON_START) wrongtermsize