diff --git a/samples/net/mqtt_publisher/boards/frdm_k64f.conf b/samples/net/mqtt_publisher/boards/frdm_k64f.conf
new file mode 100644
index 00000000000..922c1e4b05f
--- /dev/null
+++ b/samples/net/mqtt_publisher/boards/frdm_k64f.conf
@@ -0,0 +1 @@
+CONFIG_MAX_THREAD_BYTES=3