diff --git a/cms/envs/aws.py b/cms/envs/aws.py
index e30a9b6f85..34ddcbd550 100644
--- a/cms/envs/aws.py
+++ b/cms/envs/aws.py
@@ -89,9 +89,8 @@ with open(CONFIG_ROOT / CONFIG_PREFIX + "env.json") as env_file:
 # STATIC_URL_BASE specifies the base url to use for static files
 STATIC_URL_BASE = ENV_TOKENS.get('STATIC_URL_BASE', None)
 if STATIC_URL_BASE:
-    STATIC_URL = STATIC_URL_BASE + git.revision + "/"
+    STATIC_URL = STATIC_URL_BASE + "/" + git.revision + "/"
 
-STATIC_URL = ENV_TOKENS.get('STATIC_URL', STATIC_URL)
 # GITHUB_REPO_ROOT is the base directory
 # for course data
 GITHUB_REPO_ROOT = ENV_TOKENS.get('GITHUB_REPO_ROOT', GITHUB_REPO_ROOT)