diff --git a/include/mbedtls/check_config.h b/include/mbedtls/check_config.h
index be80332..655612e 100644
--- a/include/mbedtls/check_config.h
+++ b/include/mbedtls/check_config.h
@@ -66,6 +66,14 @@
 #error "MBEDTLS_HAVE_TIME_DATE without MBEDTLS_HAVE_TIME does not make sense"
 #endif
 
+#if defined(MBEDTLS_ZLIB_SUPPORT) && defined(MBEDTLS_DEPRECATED_WARNING)
+#warning "Record compression support via MBEDTLS_ZLIB_SUPPORT is deprecated and will likely be removed in a future version of the library"
+#endif
+
+#if defined(MBEDTLS_ZLIB_SUPPORT) && defined(MBEDTLS_DEPRECATED_REMOVED)
+#error "Record compression support via MBEDTLS_ZLIB_SUPPORT is deprecated and cannot be used if MBEDTLS_DEPRECATED_REMOVED is set"
+#endif
+
 #if defined(MBEDTLS_AESNI_C) && !defined(MBEDTLS_HAVE_ASM)
 #error "MBEDTLS_AESNI_C defined, but not all prerequisites"
 #endif
diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index 1c98558..05f67fa 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -1541,6 +1541,9 @@
  *
  * \note Currently compression can't be used with DTLS.
  *
+ * \deprecated This feature is deprecated and will likely be removed
+ *             in a future version of the library.
+ *
  * Used in: library/ssl_tls.c
  *          library/ssl_cli.c
  *          library/ssl_srv.c