diff --git a/build.py b/build.py
index 7b933fb5c2416d5aafa2909062c3d1ced99f11e1..94503e86cee5950371f0b6ae4df4bcefeae7b28d 100644
--- a/build.py
+++ b/build.py
@@ -15,18 +15,13 @@ if __name__ == '__main__':
     footer_bin = readin('src/footer.md')
 
     for lab_name in ('lab'+str(x) for x in [1,2,3,4,5,6,7]):
-        dist_lp = 'dist/' + lab_name
-        src_md = 'src/' + lab_name + '.md'
-
-        if not os.path.exists(src_md):
-            print('Aborting, no src file')
-            sys.exit()
+        dist_lp, src_md, src_json = 'dist/' + lab_name, 'src/' + lab_name + '.md', 'src/'+lab_name+'.json'
 
         # Make directories
         os.system('mkdir '+dist_lp)
 
         # Load data
-        data = readin('src/'+lab_name+'.json', json.loads, [{}])
+        data = readin(src_json, json.loads, [{}])
 
         # Load text
         lab = readin(src_md, lambda x: x.decode('utf8'))