diff --git a/exercises/UNIX_HPC_exercise_instructions.md b/exercises/UNIX_HPC_exercise_instructions.md
index 98583f12df190e8499317f3e77de90e85404314a..26d7422c8ef47c1833aa4ed682c8840ae4186b52 100644
--- a/exercises/UNIX_HPC_exercise_instructions.md
+++ b/exercises/UNIX_HPC_exercise_instructions.md
@@ -118,7 +118,7 @@
    
 3. **Create a new directory called `intro_to_unix`**. 
    
-4. **Move the fasta file `ompA_short_ref.fasta` into the new directory.** 
+4. **Move the fasta file `ompA_ref_short.fasta` into the new directory.** 
    * Look at the content of `intro_to_unix` without entering the directory. 
 
 5. **Move the rest of the fasta files**, but NOT the zip archive into `intro_to_unix`.