diff --git a/tools/nnlojet/nnlojet-combine.py b/tools/nnlojet/nnlojet-combine.py
index a770c0519983bb16fe8398a8c36fd51f6967d2a1..b24552fd2ff35fa3000d39c81a26e84ef141ced1 100755
--- a/tools/nnlojet/nnlojet-combine.py
+++ b/tools/nnlojet/nnlojet-combine.py
@@ -91,7 +91,7 @@ def process_parts_queue(parts_queue):
         parts_queue.task_done()
 
 
-def read_weights(wgt_file):
+def read_APPLfast(wgt_file):
     with open(wgt_file, 'rt') as file:
         hist_acc = NNLOJETHistogram()
         nx = 0
@@ -146,9 +146,9 @@ def main():
     # multi-process
     parser.add_argument('-j', '--jobs', type=int, nargs='?', action='store', default='1',
                         help='Specifies the number of jobs to run simultaneously.')
-    # read in weights weight table
-    parser.add_argument('--weights', action='store', default=None,
-                        help='Read in a weight table and combine.')
+    # read in APPLfast weight table
+    parser.add_argument('--APPLfast', action='store', default=None,
+                        help='Read in an APPLfast weight table and combine.')
     # Parse the input arguments!
     args = parser.parse_args()
 
@@ -156,10 +156,10 @@ def main():
     config.optionxform = lambda option: option  # do not convert to lower case
     config.read(args.config)
 
-    # read in weight table?
-    wgt_file = args.weights
+    # read in APPLfast weight table?
+    wgt_file = args.APPLfast
     if wgt_file is not None:
-        read_weights(wgt_file)
+        read_APPLfast(wgt_file)
         return
 
     cross_pattern = re.compile(r'.*cross.*')
@@ -455,8 +455,8 @@ def main():
             hist.write_to_file(outfile)
             # write to the file
             if qweights:
-                with open(outdir_final + '/' + fin + '.' + obs_out + '.weights.txt', 'wt') as fout:
-                    print(hist.to_weights(), file=fout)
+                with open(outdir_final + '/' + fin + '.' + obs_out + '.APPLfast.txt', 'wt') as fout:
+                    print(hist.to_APPLfast_weight(), file=fout)
 
 
 if __name__ == "__main__":
diff --git a/tools/nnlojet/nnlojet_util.py b/tools/nnlojet/nnlojet_util.py
index 15628784b6bf9290e0ac5265e6298065539a4710..e1dbedd8af5e57e7751f63e7fb22ed28b79227ec 100755
--- a/tools/nnlojet/nnlojet_util.py
+++ b/tools/nnlojet/nnlojet_util.py
@@ -373,7 +373,7 @@ class NNLOJETHistogram():
         return '\n'.join(lines)
 
 
-    def to_weights(self):
+    def to_APPLfast_weight(self):
         # construct string line by line
         lines = []