diff --git a/src/core/iomgr/endpoint_pair_windows.c b/src/core/iomgr/endpoint_pair_windows.c
index 365f2d15a7a..a30d3f70abe 100644
--- a/src/core/iomgr/endpoint_pair_windows.c
+++ b/src/core/iomgr/endpoint_pair_windows.c
@@ -33,7 +33,7 @@
 
 #include <grpc/support/port_platform.h>
 
-#ifdef GPR_POSIX_SOCKET
+#ifdef GPR_WINSOCK_SOCKET
 
 #include "src/core/iomgr/endpoint_pair.h"