diff --git a/ippisite/ippidb/templates/contribute.html b/ippisite/ippidb/templates/contribute.html
index 9d9b12485069597ba7903a7d6bb0412a28f4d21f..640114247f6e1e2f23a44383fd4f60d2df8445f0 100644
--- a/ippisite/ippidb/templates/contribute.html
+++ b/ippisite/ippidb/templates/contribute.html
@@ -3,7 +3,7 @@
     
 {% block title %}inhibitors of Protein-Protein Interaction Database{% endblock %}
 {% block extra_css %}
-    <link rel="stylesheet" href="/static/css/admin-session.css">
+    <link rel="stylesheet" href="{% sstatic '/css/admin-session.css' %}">
 {% endblock %}
 
 {% block content %}
diff --git a/ippisite/ippidb/templatetags/sstatic.py b/ippisite/ippidb/templatetags/sstatic.py
index 0681cc4433323d4feb34e76830bb8d1c6a640fff..937afa9242a410acc585ebcf28e9645f490abce2 100644
--- a/ippisite/ippidb/templatetags/sstatic.py
+++ b/ippisite/ippidb/templatetags/sstatic.py
@@ -15,9 +15,9 @@ def sstatic(path):
     '''
     Returns absolute URL to static file with versioning.
     '''
+    full_path = os.path.join(settings.STATIC_URL, path[1:] if path[0] == '/' else path)
     if not settings.DEBUG:
-        return path
-    full_path = os.path.join(settings.STATIC_ROOT, path[1:] if path[0] == '/' else path)
+        return full_path
     try:
         # Get file modification time.
         mtime = os.path.getmtime(full_path)