diff --git a/src/env.c b/src/env.c
index b541e44..ec796c9 100644
--- a/src/env.c
+++ b/src/env.c
@@ -445,7 +445,11 @@ int runTests(int detailed, int specificTest)
         struct helpText h = helpTexts[hi];
         if (h.tests) {
             if (detailed && h.testCount > 0) {
-                printf(" `%s` ", h.symbol);
+                if (isSpecific) {
+                    printf("`%s` ", h.symbol);
+                } else {
+                    printf(" `%s` ", h.symbol);
+                }
             }
             for (int ti = 0; ti < h.testCount; ti += 2) {
                 const char* test = h.tests[ti];
diff --git a/src/threads.c b/src/threads.c
index 4a980bd..047d006 100644
--- a/src/threads.c
+++ b/src/threads.c
@@ -61,6 +61,7 @@ void* doAsync(void* args)
     promise->done = 1;
     cleanPromise(promise);
 
+    deleteEnv(promise->env);
     cleanObject(&cloned);
     return NULL;
 }
@@ -75,6 +76,7 @@ Object async(Object* params, int length, struct Environment* env)
         .env = env,
         .object = cloneObject(params[0]),
     };
+    env->refs += 1;
 
     pthread_create(&promise.promise->thread, NULL, doAsync, promise.promise);
     return promise;