diff --git a/src/credit_flow.erl b/src/credit_flow.erl
index 893206214564..ab54b823356f 100644
--- a/src/credit_flow.erl
+++ b/src/credit_flow.erl
@@ -68,6 +68,11 @@
             put(Key, Expr)
         end).
 
+%% If current process was blocked by credit flow in the last
+%% STATE_CHANGE_INTERVAL milliseconds, state/0 will report it as "in
+%% flow".
+-define(STATE_CHANGE_INTERVAL, 1000000).
+
 %%----------------------------------------------------------------------------
 
 %% There are two "flows" here; of messages and of credit, going in
@@ -117,7 +122,7 @@ state() -> case blocked() of
                false -> case get(credit_blocked_at) of
                             undefined -> running;
                             B         -> Diff = timer:now_diff(erlang:now(), B),
-                                         case Diff < 5000000 of
+                                         case Diff < ?STATE_CHANGE_INTERVAL of
                                              true  -> flow;
                                              false -> running
                                          end