diff --git a/src/CoroutineManager.cs b/src/CoroutineManager.cs
index 4b04d49..c6fabb4 100644
--- a/src/CoroutineManager.cs
+++ b/src/CoroutineManager.cs
@@ -25,6 +25,7 @@ public void ActivateCoroutine(CoroutineBase coroutine)
             if (isIteratingActiveCoroutines)
             {
                 coroutinesToActivate.Add(coroutine);
+                coroutinesToDeactivate.Remove(coroutine);
             }
             else
             {
@@ -37,6 +38,7 @@ public void DeactivateCoroutine(CoroutineBase coroutine)
             if (isIteratingActiveCoroutines)
             {
                 coroutinesToDeactivate.Add(coroutine);
+                coroutinesToActivate.Remove(coroutine);
             }
             else
             {