diff --git a/tests/test_common.sh.in b/tests/test_common.sh.in
index 6b54ad015..5b6126dbf 100755
--- a/tests/test_common.sh.in
+++ b/tests/test_common.sh.in
@@ -17,6 +17,9 @@ PREFERRED_PYTHON=@PREFERRED_PYTHON_PATH@
 LC_ALL=C
 export LC_ALL
 
+MALLOC_CHECK_=3
+export MALLOC_CHECK_
+
 OSCAP_FULL_VALIDATION=1
 export OSCAP_FULL_VALIDATION