Use #if !EV_MULTIPLICITY instead of #ifndef because it should be defined always.

1 files changed, 1 insertions, 1 deletions

diff --git a/ev++.h b/ev++.h
index 0a31f6b..5c0693d 100644
--- a/ev++.h
+++ b/ev++.h
@@ -377,7 +377,7 @@ namespace ev {
     : loop_ref (ev_default_loop (flags))
 #endif
     {
-#ifndef EV_MULTIPLICITY
+#if !EV_MULTIPLICITY
     if (!ev_default_loop (flags))
       throw bad_loop ();
 #endif