diff --git a/src/os/darwin/darwin_sigar.c b/src/os/darwin/darwin_sigar.c
index 23011f01..8f30ec3a 100644
--- a/src/os/darwin/darwin_sigar.c
+++ b/src/os/darwin/darwin_sigar.c
@@ -160,7 +160,9 @@ int sigar_os_open(sigar_t **sigar)
     }
 #endif
 
+#ifndef DARWIN
     get_koffsets(*sigar);
+#endif
 
     (*sigar)->ncpu = ncpu;