diff --git a/tests/vloghtb/run-test.sh b/tests/vloghtb/run-test.sh
index 6b3c26519..0e01fd646 100755
--- a/tests/vloghtb/run-test.sh
+++ b/tests/vloghtb/run-test.sh
@@ -8,5 +8,7 @@ tar --strip=1 -xjf vloghammer_tb.tar.bz2
 
 make clean
 make -j4 EXIT_ON_ERROR=1 YOSYS_BIN=$PWD/../../yosys YOSYS_SCRIPT="proc;;" check_yosys
+
+rm -rf log_test_*
 make -j4 -f test_makefile MODE=share