diff --git a/src/main/java/net/lamgc/oracle/sentry/script/groovy/GroovyTriggerProvider.java b/src/main/java/net/lamgc/oracle/sentry/script/groovy/GroovyTriggerProvider.java
index 4d8fb47..ee5fae2 100644
--- a/src/main/java/net/lamgc/oracle/sentry/script/groovy/GroovyTriggerProvider.java
+++ b/src/main/java/net/lamgc/oracle/sentry/script/groovy/GroovyTriggerProvider.java
@@ -56,7 +56,7 @@ public class GroovyTriggerProvider {
         if (!triggerProviderMap.containsKey(triggerName.toLowerCase())) {
             throw new NoSuchElementException("The specified trigger could not be found: " + triggerName);
         }
-        return triggerProviderMap.get(triggerName).get();
+        return triggerProviderMap.get(triggerName.toLowerCase()).get();
     }
 
 }