diff --git a/contrib/curl/lib/select.h b/contrib/curl/lib/select.h
index e247bd9d..c0b450f3 100644
--- a/contrib/curl/lib/select.h
+++ b/contrib/curl/lib/select.h
@@ -36,7 +36,8 @@
 
 #if !defined(HAVE_STRUCT_POLLFD) && \
     !defined(HAVE_SYS_POLL_H) && \
-    !defined(HAVE_POLL_H)
+    !defined(HAVE_POLL_H) && \
+    !defined(POLLIN)
 
 #define POLLIN      0x01
 #define POLLPRI     0x02