diff --git a/setup/preflight.sh b/setup/preflight.sh
index 90d36cc1..26df3ed1 100644
--- a/setup/preflight.sh
+++ b/setup/preflight.sh
@@ -19,7 +19,7 @@ fi
 
 # Check that we have enough memory.
 #
-# /proc/meminfo reports free memory in kibibytes. Our baseline will be 768 KB,
+# /proc/meminfo reports free memory in kibibytes. Our baseline will be 768 MB,
 # which is 750000 kibibytes.
 #
 # Skip the check if we appear to be running inside of Vagrant, because that's really just for testing.