diff --git a/lib/base/log.c b/lib/base/log.c
index 618b6bc11..b90a8b78a 100644
--- a/lib/base/log.c
+++ b/lib/base/log.c
@@ -156,7 +156,7 @@ heim_log_facility *
 heim_log_ref(heim_log_facility *fac)
 {
     if (fac)
-        heim_base_atomic_inc(&fac->refs);
+        (void) heim_base_atomic_inc(&fac->refs);
     return fac;
 }