diff --git a/sanic/config.py b/sanic/config.py
index 6ffcf7a1..6a53e476 100644
--- a/sanic/config.py
+++ b/sanic/config.py
@@ -195,14 +195,14 @@ class Config(dict):
             if key.isupper():
                 self[key] = getattr(obj, key)
 
-    def load_environment_vars(self):
+    def load_environment_vars(self, prefix=SANIC_PREFIX):
         """
-        Looks for any ``SANIC_`` prefixed environment variables and applies
+        Looks for prefixed environment variables and applies
         them to the configuration if present.
         """
         for k, v in os.environ.items():
-            if k.startswith(SANIC_PREFIX):
-                _, config_key = k.split(SANIC_PREFIX, 1)
+            if k.startswith(prefix):
+                _, config_key = k.split(prefix, 1)
                 try:
                     self[config_key] = int(v)
                 except ValueError: