diff --git a/.travis.yml b/.travis.yml
index 838b697ae..a93298a55 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,8 +7,8 @@ cache:
     - tmp/cache/assets/test/sprockets
 env:
   matrix:
-    - ELASTICSEARCH=true RSPEC_TAG=elasticsearch COVERAGE=true
-    - ELASTICSEARCH=false RSPEC_TAG=~elasticsearch COVERAGE=false
+    - GROWSTUFF_ELASTICSEARCH=true RSPEC_TAG=elasticsearch COVERAGE=true
+    - GROWSTUFF_ELASTICSEARCH=false RSPEC_TAG=~elasticsearch COVERAGE=false
     - STATIC_CHECKS=true
   global:
     - GROWSTUFF_SITE_NAME="Growstuff (travis)"
diff --git a/script/install_elasticsearch.sh b/script/install_elasticsearch.sh
index 0f2f24c48..1543a71bc 100755
--- a/script/install_elasticsearch.sh
+++ b/script/install_elasticsearch.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-if [ "${ELASTICSEARCH}" = "true" ]; then
+if [ "${GROWSTUFF_ELASTICSEARCH}" = "true" ]; then
   set -euv
   sudo dpkg -r elasticsearch
   curl -O https://download.elastic.co/elasticsearch/release/org/elasticsearch/distribution/deb/elasticsearch/2.4.0/elasticsearch-2.4.0.deb