diff --git a/pyproject.toml b/pyproject.toml
index 8e87811..927a5d0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [tool.poetry]
 description = "Generate continuous time stationary stochastic processes from a given auto correlation function."
 name = "stocproc"
-version = "1.1.3"
+version = "2.0.0"
 authors = ["Richard Hartmann <richard.hartmann@tu-dresden.de>"]
 license = "BSD (3 clause)"
 classifiers = [
diff --git a/stocproc/config.py b/stocproc/config.py
index fc37d7f..8764f10 100644
--- a/stocproc/config.py
+++ b/stocproc/config.py
@@ -4,4 +4,4 @@ config = configparser.ConfigParser()
 config.read("stocproc.ini")
 
 
-USE_NORMALIZED_DIFF = config.getboolean("FFT", "use_normalized_diff", fallback=False)
+USE_NORMALIZED_DIFF = config.getboolean("FFT", "use_normalized_diff", fallback=True)