diff --git a/grails-app/services/com/grailsrocks/cacheheaders/CacheHeadersService.groovy b/grails-app/services/com/grailsrocks/cacheheaders/CacheHeadersService.groovy
index f4abdec..0eb0833 100644
--- a/grails-app/services/com/grailsrocks/cacheheaders/CacheHeadersService.groovy
+++ b/grails-app/services/com/grailsrocks/cacheheaders/CacheHeadersService.groovy
@@ -170,7 +170,7 @@ class CacheHeadersService {
                 def compareDate = new Date(modifiedDate)
                 lastMod = callClosure(lastModDSL, context)
 
-                if (compareDate != lastMod) {
+                if (lastMod.after(compareDate)) {
                     lastModChanged = true
                 }
             }