diff --git a/Makefile.docker b/Makefile.docker
index 4a741c173f79f73094b1e22da8622d562aa0eb27..1ee2657a9728cf6c9c44e3c1601bd7655a7b2997 100644
--- a/Makefile.docker
+++ b/Makefile.docker
@@ -42,6 +42,7 @@ export DOCKER_ENV_VARS = \
   SIZE \
   UNDEF \
   BUILDTEST_MCU_GROUP \
+  BUILDTEST_VERBOSE \
   #
 
 # Find which variables were set using the command line or the environment and