diff --git a/CMakeLists.txt b/CMakeLists.txt
index 01a17e222..7e9733ab1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -663,7 +663,11 @@ CHECK_C_SOURCE_COMPILES("#include <pthread.h>\nvoid main(void) { while(1) ; } vo
 CHECK_C_SOURCE_COMPILES("#include <inttypes.h>\nvoid main(void) { while(1) ; } void xxexit(void){}" LWS_HAVE_INTTYPES_H)
 CHECK_C_SOURCE_COMPILES("#include <sys/resource.h>\nvoid main(void) { while(1) ; } void xxexit(void){}" LWS_HAVE_SYS_RESOURCE_H)
 CHECK_C_SOURCE_COMPILES("#include <linux/ipv6.h>\nvoid main(void) { while(1) ; } void xxexit(void){}" LWS_HAVE_LINUX_IPV6_H)
-CHECK_C_SOURCE_COMPILES("#include <net/ethernet.h>\nvoid main(void) { while(1) ; } void xxexit(void){}" LWS_HAVE_NET_ETHERNET_H)
+if (LWS_HAVE_SYS_TYPES_H)
+	CHECK_C_SOURCE_COMPILES("#include <sys/types.h>\n#include <net/ethernet.h>\n void main(void) { while (1) ; } void xxexit(void){}" LWS_HAVE_NET_ETHERNET_H)
+else()
+	CHECK_C_SOURCE_COMPILES("#include <net/ethernet.h>\nvoid main(void) { while(1) ; } void xxexit(void){}" LWS_HAVE_NET_ETHERNET_H)
+endif()
 CHECK_C_SOURCE_COMPILES("#include <systemd/sd-daemon.h>\nvoid main(void) { while(1) ; } void xxexit(void){}" LWS_HAVE_SYSTEMD_H)