diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a2bacbf..82c85db 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -8,8 +8,10 @@ compile_pdf:
 
 data_processing:
   image: python_datascience
+  variables:
+    MPLBACKEND: agg
   script:
-    - python3 data/processing.py
+    - cd data && python3 processing.py
   artifacts:
     paths:
       - data/2kw_direct.png
diff --git a/data/processing.py b/data/processing.py
index f60a4da..399b93f 100644
--- a/data/processing.py
+++ b/data/processing.py
@@ -3,6 +3,7 @@
 import numpy as np
 import pandas as pd
 import matplotlib.pyplot as plt
+plt.ioff()
 plt.style.use('bmh')
 
 data = pd.read_csv("./log_2kw_direct.csv")