diff --git a/t/t3070-wildmatch.sh b/t/t3070-wildmatch.sh
index b91a7cb712..4dd42df38c 100755
--- a/t/t3070-wildmatch.sh
+++ b/t/t3070-wildmatch.sh
@@ -432,10 +432,12 @@ match 0 1 0 1 'z' '[Z-y]'
 match 1 1 1 1 'Z' '[Z-y]'
 
 test_expect_success 'matching does not exhibit exponential behavior' '
-	test-tool wildmatch wildmatch \
-		aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab \
-		"*a*a*a*a*a*a*a*a*a*a*a*a*a*a*a*a" &
-	pid=$! &&
+	{
+		test-tool wildmatch wildmatch \
+			aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab \
+			"*a*a*a*a*a*a*a*a*a*a*a*a*a*a*a*a" &
+		pid=$!
+	} &&
 	sleep 2 &&
 	! kill $!
 '