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-rw-r--r--lib/hostip.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/hostip.c b/lib/hostip.c
index 0ef806b72..4acf1217e 100644
--- a/lib/hostip.c
+++ b/lib/hostip.c
@@ -76,8 +76,8 @@
/* The last #include file should be: */
#include "memdebug.h"
-#if defined(HAVE_ALARM) && defined(SIGALRM) && defined(HAVE_SIGSETJMP) \
- && !defined(USE_ARES)
+#if defined(CURLRES_SYNCH) && \
+ defined(HAVE_ALARM) && defined(SIGALRM) && defined(HAVE_SIGSETJMP)
/* alarm-based timeouts can only be used with all the dependencies satisfied */
#define USE_ALARM_TIMEOUT
#endif