diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7559b1a..e51a115 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -50,7 +50,7 @@ Version 1.6.1
 
 **New features**
 
-* IO routines for zmap files ([#199](https://github.com/GeoStat-Framework/PyKrige/pull/165))
+* IO routines for zmap files ([#199](https://github.com/GeoStat-Framework/PyKrige/pull/199))
 * `write_asc_grid` got new keyword `no_data` ([#199](https://github.com/GeoStat-Framework/PyKrige/issues/199))
 
 **Changes**
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 0e576d6..343ab29 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -121,7 +121,7 @@
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = None
+language = "en"
 
 # There are two options for replacing |today|: either, you set today to some
 # non-false value, then it is used:
diff --git a/examples/07_regression_kriging2d.py b/examples/07_regression_kriging2d.py
index 33fc558..9b0285a 100644
--- a/examples/07_regression_kriging2d.py
+++ b/examples/07_regression_kriging2d.py
@@ -17,7 +17,7 @@
 
 svr_model = SVR(C=0.1, gamma="auto")
 rf_model = RandomForestRegressor(n_estimators=100)
-lr_model = LinearRegression(normalize=True, copy_X=True, fit_intercept=False)
+lr_model = LinearRegression(copy_X=True, fit_intercept=False)
 
 models = [svr_model, rf_model, lr_model]