diff --git a/Dockerfile b/Dockerfile
index 01c36e5e78c84dd0a2a306c9ed3e4e0212869592..b671b03edc5a40858b6bc4040d519bc8b95eae50 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -25,5 +25,5 @@ RUN conda env update -q -f /tmp/environment.yml && \
 
 # add chromedriver and geckodriver to PATH
 ENV PATH "$PATH:/home/work/hslu-deep-learning/notebooks/Block_5/Seleniumtest/chromedriver"
-ENV PATH "$PATH:/home/work/hslu-deep-learning/notebooks/Block_5/Seleniumtest/geckodriver"
+ENV PATH="/home/work/hslu-deep-learning/notebooks/Block_5/Seleniumtest/geckodriver:${PATH}"