diff --git a/modules/libcom/src/osi/os/posix/osdSock.c b/modules/libcom/src/osi/os/posix/osdSock.c
index 52f52a085..4ebd0db73 100644
--- a/modules/libcom/src/osi/os/posix/osdSock.c
+++ b/modules/libcom/src/osi/os/posix/osdSock.c
@@ -36,6 +36,7 @@
 /* with glibc, SOCK_CLOEXEC does not expand to a simple constant */
 #  define HAVE_SOCK_CLOEXEC
 #else
+#  undef SOCK_CLOEXEC
 #  define SOCK_CLOEXEC (0)
 #endif