diff --git a/engine/src/main/java/org/archive/crawler/frontier/WorkQueueFrontier.java b/engine/src/main/java/org/archive/crawler/frontier/WorkQueueFrontier.java
index b2a6c8cd..56aa8067 100644
--- a/engine/src/main/java/org/archive/crawler/frontier/WorkQueueFrontier.java
+++ b/engine/src/main/java/org/archive/crawler/frontier/WorkQueueFrontier.java
@@ -1504,8 +1504,12 @@ implements Closeable,
     }
 
     public void considerIncluded(CrawlURI curi) {
-        this.uriUniqFilter.note(curi.getCanonicalString());
         sheetOverlaysManager.applyOverlaysTo(curi);
+        if(curi.getClassKey()==null) {
+            // remedial processing
+            preparer.prepare(curi);
+        }
+        this.uriUniqFilter.note(curi.getCanonicalString());
         try {
             KeyedProperties.loadOverridesFrom(curi);
             curi.setClassKey(getClassKey(curi));
diff --git a/modules/src/main/java/org/archive/modules/CrawlURI.java b/modules/src/main/java/org/archive/modules/CrawlURI.java
index 41a1d878..98d9711e 100644
--- a/modules/src/main/java/org/archive/modules/CrawlURI.java
+++ b/modules/src/main/java/org/archive/modules/CrawlURI.java
@@ -1772,7 +1772,7 @@ implements MultiReporter, Serializable, OverlayContext {
     }
     public String getCanonicalString() {
         if(StringUtils.isEmpty(canonicalString)){
-            System.err.println("not canonicalized "+this);
+            logger.warning("canonicalString unset, returning uncanonicalized " + getURI());
             return getURI();
         }
         return canonicalString;
@@ -1784,7 +1784,7 @@ implements MultiReporter, Serializable, OverlayContext {
     }
     public long getPolitenessDelay() {
         if(politenessDelay<0) {
-            System.err.println("not politeness-calc "+this);
+            logger.warning("politessDelay unset, returning default 5000 for " + this);
             return 5000;
         }
         return this.politenessDelay;