diff --git a/scripts/common_startup.sh b/scripts/common_startup.sh
index 69df396e848..3f2fe3582e1 100755
--- a/scripts/common_startup.sh
+++ b/scripts/common_startup.sh
@@ -178,6 +178,6 @@ fi
 
 if [ $FETCH_WHEELS -eq 1 ]; then
     pip install $requirement_args --index-url "${GALAXY_WHEELS_INDEX_URL}" --extra-index-url "${PYPI_INDEX_URL}"
-    GALAXY_CONDITIONAL_DEPENDENCIES=$(PYTHONPATH=lib python -c "import galaxy.dependencies; print '\n'.join(galaxy.dependencies.optional('$GALAXY_CONFIG_FILE'))")
+    GALAXY_CONDITIONAL_DEPENDENCIES=$(PYTHONPATH=lib python -c "import galaxy.dependencies; print('\n'.join(galaxy.dependencies.optional('$GALAXY_CONFIG_FILE')))")
     [ -z "$GALAXY_CONDITIONAL_DEPENDENCIES" ] || echo "$GALAXY_CONDITIONAL_DEPENDENCIES" | pip install -r /dev/stdin --index-url "${GALAXY_WHEELS_INDEX_URL}" --extra-index-url "${PYPI_INDEX_URL}"
 fi