diff --git a/traval/params.py b/traval/params.py
index caea7ce..97b798e 100644
--- a/traval/params.py
+++ b/traval/params.py
@@ -159,6 +159,7 @@ def from_csv(cls, csvfile):
         TravalParameters
         """
         params = pd.read_csv(csvfile, index_col=[0, 1, 2])
+        params.sort_index(inplace=True)
         for i, (v, t) in params.loc[:, ["value", "dtype"]].iterrows():
             if t == "float":
                 v = float(v)
diff --git a/traval/rulelib.py b/traval/rulelib.py
index 687253c..6cede8a 100755
--- a/traval/rulelib.py
+++ b/traval/rulelib.py
@@ -498,7 +498,7 @@ def rule_pastas_outside_pi(
 
             # apply minimum ci if passed
             if min_ci is not None:
-                # check if mean of current interval is smalller than ci
+                # check if mean of current interval is smaller than ci
                 if (upper - lower).mean() < min_ci:
                     # adjust bounds with half of min_ci each
                     upper = upper + min_ci / 2.0
diff --git a/traval/version.py b/traval/version.py
index 7fdb7a2..260c070 100644
--- a/traval/version.py
+++ b/traval/version.py
@@ -1 +1 @@
-__version__ = "0.4b.0"
+__version__ = "0.3.1"