diff --git a/netutils/wakaama/CMakeLists.txt b/netutils/wakaama/CMakeLists.txt
index df3c32c2cdc..6e5e4f09468 100644
--- a/netutils/wakaama/CMakeLists.txt
+++ b/netutils/wakaama/CMakeLists.txt
@@ -78,6 +78,10 @@ if(CONFIG_NETUTILS_WAKAAMA)
     list(APPEND WAKAAMA_DEFINITIONS LWM2M_SUPPORT_SENML_JSON)
   endif()
 
+  if(CONFIG_WAKAAMA_TLV)
+    list(APPEND WAKAAMA_DEFINITIONS LWM2M_SUPPORT_TLV)
+  endif()
+
   list(APPEND WAKAAMA_DEFINITIONS
        LWM2M_COAP_DEFAULT_BLOCK_SIZE=${CONFIG_WAKAAMA_COAP_DEFAULT_BLOCK_SIZE})