diff --git a/read_sequencer_package/read_in_FASTA.py b/read_sequencer_package/read_in_FASTA.py
index 21ec810870f43c1ca4144cce174f3566f7576d7c..85fae3817dfdc836a811ec771327a13215fe11b3 100644
--- a/read_sequencer_package/read_in_FASTA.py
+++ b/read_sequencer_package/read_in_FASTA.py
@@ -16,7 +16,7 @@ def read_in_fasta(file_path):
     f = open(file_path)
     for line in f:
         if line[0] == '>':
-            defline = line.srtip()
+            defline = line.strip()
             defline = defline.replace('>', '')
         else:
             if defline not in sequences: