diff --git a/CMakeLists.txt b/CMakeLists.txt
index e56781a2..598febe5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -591,7 +591,6 @@ endif()
 CHECK_INCLUDE_FILE(dlfcn.h LWS_HAVE_DLFCN_H)
 CHECK_INCLUDE_FILE(fcntl.h LWS_HAVE_FCNTL_H)
 CHECK_INCLUDE_FILE(in6addr.h LWS_HAVE_IN6ADDR_H)
-CHECK_INCLUDE_FILE(inttypes.h LWS_HAVE_INTTYPES_H)
 CHECK_INCLUDE_FILE(memory.h LWS_HAVE_MEMORY_H)
 CHECK_INCLUDE_FILE(netinet/in.h LWS_HAVE_NETINET_IN_H)
 CHECK_INCLUDE_FILE(stdint.h LWS_HAVE_STDINT_H)
diff --git a/cmake/lws_config_private.h.in b/cmake/lws_config_private.h.in
index 8ad39a26..0aa6df70 100644
--- a/cmake/lws_config_private.h.in
+++ b/cmake/lws_config_private.h.in
@@ -28,9 +28,6 @@
 /* Define to 1 if you have the <in6addr.h> header file. */
 #cmakedefine LWS_HAVE_IN6ADDR_H
 
-/* Define to 1 if you have the <inttypes.h> header file. */
-#cmakedefine LWS_HAVE_INTTYPES_H
-
 /* Define to 1 if you have the `ssl' library (-lssl). */
 //#cmakedefine LWS_HAVE_LIBSSL