diff --git a/src/modules/sibyll/code_generator.py b/src/modules/sibyll/code_generator.py
index 20407f2c7e7cfe1808ab2c92b9c9ddf081feee7b..8d2353382aa68a25111d309d08b96d4c901744b9 100755
--- a/src/modules/sibyll/code_generator.py
+++ b/src/modules/sibyll/code_generator.py
@@ -27,7 +27,7 @@ def read_sibyll_codes(filename, particle_db):
     '''
     reads to sibyll codes data file
 
-    For particls known to sibyll, add 'sibyll_code' and 'sibyll_xsType' to particle_db
+    For particles known to sibyll, add 'sibyll_code' and 'sibyll_xsType' to particle_db
     '''
     with open(filename) as f:
         for line in f: