diff --git a/executor.cpp b/executor.cpp
index 8f5a2a9..af10811 100644
--- a/executor.cpp
+++ b/executor.cpp
@@ -83,7 +83,7 @@ void executor::ex_clock_thd()
 				ev = lTimedEvents.erase(ev);
 			}
 			else
-				++ev;
+				ev++;
 		}
 		lck.unlock();