--- a/layout/tools/reftest/reftest.jsm
+++ b/layout/tools/reftest/reftest.jsm
@@ -527,17 +527,19 @@ function StartTests()
 
             if (gURLs[i].slow && !gRunSlowTests)
                 continue;
 
             tURLs.push(gURLs[i]);
             tIDs.push(gURLs[i].identifier);
         }
 
-        logger.suiteStart(tIDs, {"skipped": gURLs.length - tURLs.length});
+        if (gStartAfter === undefined) {
+            logger.suiteStart(tIDs, {"skipped": gURLs.length - tURLs.length});
+        }
 
         if (gTotalChunks > 0 && gThisChunk > 0) {
             // Calculate start and end indices of this chunk if tURLs array were
             // divided evenly
             var testsPerChunk = tURLs.length / gTotalChunks;
             var start = Math.round((gThisChunk-1) * testsPerChunk);
             var end = Math.round(gThisChunk * testsPerChunk);