diff --git a/sbt/src/sbt-test/source-dependencies/export-jars/test b/sbt/src/sbt-test/source-dependencies/export-jars/test
index 68340bd37..e06ce1ee5 100644
--- a/sbt/src/sbt-test/source-dependencies/export-jars/test
+++ b/sbt/src/sbt-test/source-dependencies/export-jars/test
@@ -3,9 +3,12 @@ $ copy-file changes/B.scala B.scala
 $ copy-file changes/A1.scala a/A.scala
 > run 1
 $ copy-file changes/A2.scala a/A.scala
+
+# done this way because last modified times often have ~1s resolution
 $ sleep 2000
 > run 2
 $ copy-file changes/A3.scala a/A.scala
+
 $ sleep 2000
 > run 3
 
@@ -15,8 +18,10 @@ $ copy-file changes/build2.sbt build.sbt
 $ copy-file changes/A1.scala a/A.scala
 > run 1
 $ copy-file changes/A2.scala a/A.scala
+
 $ sleep 2000
 > run 2
 $ copy-file changes/A3.scala a/A.scala
+
 $ sleep 2000
-> run 3
\ No newline at end of file
+> run 3