diff --git a/templates/event-generator/adapt_member.sh b/templates/event-generator/adapt_member.sh
index 61d8c2374d840d397fadc23a4f9acab1893b74c3..8e9bd2ef96d6bf77ff9972d82fc2658e0d95c047 100644
--- a/templates/event-generator/adapt_member.sh
+++ b/templates/event-generator/adapt_member.sh
@@ -34,6 +34,9 @@ load_spack "%spack.init%" "%spack.root%" "%spack.url%" "%spack.branch%" "%spack.
 # Load dwd-icon-tools
 spack load --first dwd-icon-tools % "%spack.compiler%"
 
+# Set environment variable for eccodes-dwd definitions:
+source ${WORKDIR}/eccodes_defs.env
+
 # Activate virtual environment
 source ${WORKDIR}/python_environment/bin/activate