diff --git a/zephyr/CMakeLists.txt b/zephyr/CMakeLists.txt
index accf3ffa1..7759dc7dd 100644
--- a/zephyr/CMakeLists.txt
+++ b/zephyr/CMakeLists.txt
@@ -10,4 +10,5 @@ if(CONFIG_WOLFSSH)
   target_compile_definitions(app PUBLIC WOLFSSH_ZEPHYR)
   target_compile_definitions(app PUBLIC WOLFSSH_IGNORE_FILE_WARN)
   target_compile_definitions(app PUBLIC WOLFSSH_NO_TIMESTAMP)
+  target_compile_definitions(app PUBLIC WOLFSSH_KEYS_PATH="./keys/"
 endif()