diff --git a/tests/test-all b/tests/test-all
index 5e32be3..306d46e 100755
--- a/tests/test-all
+++ b/tests/test-all
@@ -9,3 +9,13 @@ set -x
 "$here"/test-supported
 "$here"/test-queries
 "$here"/test-random
+
+if [ -v COVERAGE ]; then
+  # Do at most 10 seconds of failmalloc testing
+  "$here"/test-failmalloc || true
+  now=$(date +%s)
+  in_10s=$((now+10))
+  while [ $(date +%s) -lt $in_10s ]; do
+    "$here"/test-failmalloc || true
+  done
+fi