diff --git a/tools/testing/radix-tree/main.c b/tools/testing/radix-tree/main.c
index 86de448b699e5b73c81b53af0009a2160b5b8fae..b829127d56705747a0a74c73e8b11b8cae8ecc27 100644
--- a/tools/testing/radix-tree/main.c
+++ b/tools/testing/radix-tree/main.c
@@ -365,8 +365,8 @@ int main(int argc, char **argv)
 	regression1_test();
 	regression2_test();
 	regression3_test();
-	iteration_test(0, 10);
-	iteration_test(7, 20);
+	iteration_test(0, 10 + 90 * long_run);
+	iteration_test(7, 10 + 90 * long_run);
 	single_thread_tests(long_run);
 
 	/* Free any remaining preallocated nodes */