diff --git a/ex10.mu b/ex10.mu
index 608fdcec..ddea539a 100644
--- a/ex10.mu
+++ b/ex10.mu
@@ -1,4 +1,4 @@
-# Demo of mouse, showing deltas in x and y position for every event.
+# Demo of mouse support.
 #
 # To build a disk image:
 #   ./translate ex10.mu            # emits disk.img
diff --git a/ex8.mu b/ex8.mu
index 4d7e2836..7e1f1b9c 100644
--- a/ex8.mu
+++ b/ex8.mu
@@ -1,4 +1,4 @@
-# Demo of floating-point
+# Demo of floating-point support.
 #
 # To build a disk image:
 #   ./translate ex8.mu             # emits disk.img