diff --git a/.travis.yml b/.travis.yml
index 377c69c0..5649c37f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -27,7 +27,7 @@ cache:
     directories:
         - "~/.platformio"
 env:
-    - PLATFORMIO_CI_SRC=wled00 PLATFORMIO_BUILD_FLAGS="-D DEBUG=false"
+    - PLATFORMIO_CI_SRC=wled00 PLATFORMIO_BUILD_FLAGS="-D DEBUG=0"
 install:
     - pip install -U platformio
     - platformio update