diff --git a/include/mbedtls/check_config.h b/include/mbedtls/check_config.h
index ef19f38..90dee6c 100644
--- a/include/mbedtls/check_config.h
+++ b/include/mbedtls/check_config.h
@@ -55,9 +55,8 @@
 #endif
 #endif /* _WIN32 */
 
-#if defined(TARGET_LIKE_MBED) && \
-    ( defined(MBEDTLS_NET_C) || defined(MBEDTLS_TIMING_C) )
-#error "The NET and TIMING modules are not available for mbed OS - please use the network and timing functions provided by mbed OS"
+#if defined(TARGET_LIKE_MBED) && defined(MBEDTLS_NET_C)
+#error "The NET module is not available for mbed OS - please use the network functions provided by Mbed OS"
 #endif
 
 #if defined(MBEDTLS_DEPRECATED_WARNING) && \