diff --git a/soitool/codebook_to_pdf.py b/soitool/codebook_to_pdf.py
index 2e2635172f107564ba28287640c5adc2b2287042..d6c131c1b9e600c59882351bff12b97880af453b 100644
--- a/soitool/codebook_to_pdf.py
+++ b/soitool/codebook_to_pdf.py
@@ -133,7 +133,7 @@ def generate_filename(codebook_size):
 
 
 def get_codebook_data(codebook_size=CodebookSize.FULL):
-    """Read codebook-data from database and change datatype to 2D list.
+    """Read and format codebook-data from database sorted by Word and Code.
 
     Parameters
     ----------