diff --git a/winpr/CMakeLists.txt b/winpr/CMakeLists.txt
index 14ece21ad..01cb81021 100644
--- a/winpr/CMakeLists.txt
+++ b/winpr/CMakeLists.txt
@@ -130,7 +130,6 @@ endif()
 		check_include_files(inttypes.h HAVE_INTTYPES_H)
 		check_include_files(sys/filio.h HAVE_SYS_FILIO_H)
 		check_include_files(sys/sockio.h HAVE_SYS_SOCKIO_H)
-		check_include_files(sys/strtio.h HAVE_SYS_STRTIO_H)
 		check_include_files(syslog.h HAVE_SYSLOG_H)
 		check_include_files(sys/select.h HAVE_SYS_SELECT_H)
 		check_include_files(sys/eventfd.h HAVE_SYS_EVENTFD_H)
diff --git a/winpr/config.h.in b/winpr/config.h.in
index 616e12533..a6f7e9bf8 100644
--- a/winpr/config.h.in
+++ b/winpr/config.h.in
@@ -13,7 +13,6 @@
 #cmakedefine HAVE_SYS_FILIO_H
 #cmakedefine HAVE_SYS_SELECT_H
 #cmakedefine HAVE_SYS_SOCKIO_H
-#cmakedefine HAVE_SYS_STRTIO_H
 #cmakedefine HAVE_SYS_EVENTFD_H
 #cmakedefine HAVE_SYS_TIMERFD_H
 #cmakedefine HAVE_TM_GMTOFF