diff --git a/qssb.h b/qssb.h
index 379d86b..2addedb 100644
--- a/qssb.h
+++ b/qssb.h
@@ -482,11 +482,11 @@ int qssb_enable_policy(struct qssb_policy *policy)
 
 	if(policy->chroot_target_path == NULL)
 	{
-		char target_dir[PATH_MAX];
+		char *target_dir = calloc(1, PATH_MAX * sizeof(char));
 		char random_str[17];
 		if(random_string(random_str, sizeof(random_str)) == 16)
 		{
-			int res = snprintf(target_dir, sizeof(target_dir), "%s/.sandbox_%" PRIdMAX "_%s", QSSB_TEMP_DIR, (intmax_t)getpid(), random_str);
+			int res = snprintf(target_dir, PATH_MAX, "%s/.sandbox_%" PRIdMAX "_%s", QSSB_TEMP_DIR, (intmax_t)getpid(), random_str);
 			if(res < 0)
 			{
 				QSSB_LOG_ERROR("qssb: qssb_enable_policy: error during path concatination\n");