diff --git a/Sc2045.md b/Sc2045.md
index a4588f3..fe32c16 100644
--- a/Sc2045.md
+++ b/Sc2045.md
@@ -1,4 +1,4 @@
-## Iterate over globs whenever possible (e.g. 'for f in */*.wav'), as for loops over ls will fail for filenames like 'my file*.txt'.
+## Iterating over ls output is fragile. Use globs.
 
 ### Problematic code:
 
@@ -11,10 +11,11 @@
 
     for f in *.wav
     do
+      [[ -e $f ]] || break  # handle the case of no *.wav files
       echo "$f"
     done
 
-(Also note that in Bash, `shopt -s nullglob` will allow the loop to run 0 times instead of 1 if there are no matches. There are [several other conditions](http://mywiki.wooledge.org/BashPitfalls#for_i_in_.24.28ls_.2A.mp3.29) to look out for. )
+Also note that in Bash, `shopt -s nullglob` will allow the loop to run 0 times instead of 1 if there are no matches. There are also [several other conditions](http://mywiki.wooledge.org/BashPitfalls#for_i_in_.24.28ls_.2A.mp3.29) to be aware of.
 
 ### Rationale: