diff --git a/environment.yml b/environment.yml
index 61e0096d..0007e3e5 100644
--- a/environment.yml
+++ b/environment.yml
@@ -15,5 +15,4 @@ dependencies:
   - sphinx_rtd_theme
   - vitables
   - pip:
-    - Cython
     - pyirf
diff --git a/protopipe/aux/example_config_files/protopipe/performance.yaml b/protopipe/aux/example_config_files/protopipe/performance.yaml
index 037acaa3..26969e4b 100644
--- a/protopipe/aux/example_config_files/protopipe/performance.yaml
+++ b/protopipe/aux/example_config_files/protopipe/performance.yaml
@@ -2,7 +2,6 @@
 general:
  # Directory with input data file
  # [...] = your analysis local full path OUTSIDE the Vagrant box
- # Please refer to directory structure shown at Lugano
  indir: '[...]/data/DL2'
  # Template name for input file
  template_input_file: 'DL2_{}_{}_merged.h5' # filled with mode and particle type
@@ -83,4 +82,4 @@ column_definition:
   name: 'gammaness'
   range: [0, 1]
  angular_distance_to_the_src: 'xi'
- 
\ No newline at end of file
+