diff --git a/README.md b/README.md
index 24486f4..10cecff 100644
--- a/README.md
+++ b/README.md
@@ -35,8 +35,11 @@ You can get the source code from `github
 
 The development mode is often useful. From the fluidfoam directory, run::
 
-  python -m build && pip install dist/fluidfoam*.whl --user
+  python3 -m pip install --editable . --user
+  
+Or if you are using a virtual environment, run::
 
+  python3 -m pip install --editable .
 
 Committing instructions (in development mode)
 ---------------------------------------------
diff --git a/fluidfoam/readpostpro.py b/fluidfoam/readpostpro.py
index b33f114..b27e5d4 100644
--- a/fluidfoam/readpostpro.py
+++ b/fluidfoam/readpostpro.py
@@ -175,7 +175,7 @@ def readprobes(path, probes_name="probes", time_name="0", name="U"):
             j += 1
         elif "#".encode() not in line:
             break
-    n_probes = j-2
+    n_probes = j-1
     probes_loc = np.zeros([n_probes, 3], dtype=float)
     j = 0
     header = True