diff --git a/das/src/main/java/com/das/modules/calc/functions/FunctionCacheValue.java b/das/src/main/java/com/das/modules/calc/functions/FunctionCacheValue.java
index 35baeb8b..092a9d49 100644
--- a/das/src/main/java/com/das/modules/calc/functions/FunctionCacheValue.java
+++ b/das/src/main/java/com/das/modules/calc/functions/FunctionCacheValue.java
@@ -62,7 +62,7 @@ public class FunctionCacheValue extends AbstractFunction {
         String key = (String)keyData.getValue(env);
         String scriptName = (String)env.get("G_SCRIPTNAME");
 
-        String cacheKey = String.format("%s_%s", scriptName, key);
+        String cacheKey = String.format("%s%s_%s", CACHE_PREFIX, scriptName, key);
         Double value = redis.get(cacheKey);
         if (value == null) {
             return AviatorNil.NIL;