diff --git a/q3d/config.py b/q3d/config.py
index e23d75c..08d6c96 100644
--- a/q3d/config.py
+++ b/q3d/config.py
@@ -23,14 +23,10 @@ def process_settings(s: FromDict) -> None:
     pass
 
 def process_constants(c: FromDict) -> None:
-    """ Takes the constants FromDict (c) and adds L0, S0, and dt.
+    """ Takes the constants FromDict (c) and adds S0, and dt.
     Note that this function may only be called AFTER calling process_settings(). """
 
-    from math import sqrt, ceil
-
-    # set L0 if not explicitly set
-    if c.L0 == 'auto':
-        c.L0 = ceil(2*(c.A+c.B**2/c.C))
+    from math import sqrt
 
     # set S0 as minimum of double well
     c.S0 = (c.B + sqrt(c.B**2 + 24.0*c.A*c.C))/(4.0*c.C)
diff --git a/scripts/qnondim b/scripts/qnondim
index 8588634..3d67900 100755
--- a/scripts/qnondim
+++ b/scripts/qnondim
@@ -35,7 +35,6 @@ def nondimensionalize(const,R):
 
 	# Define non-dimensionalized constants
 
-	nd_const['L0'] = const['L0']
 	nd_const['A'] = const['A']/C0
 	nd_const['B'] = const['B']/C0
 	nd_const['C'] = const['C']/C0
diff --git a/scripts/qsave b/scripts/qsave
index 9ec8337..de3e59f 100755
--- a/scripts/qsave
+++ b/scripts/qsave
@@ -38,7 +38,6 @@ vis:
 default_ymls['constants'] = """A: 7.502103740308257
 B: 60.97581316589323
 C: 66.51906890824715
-L0: 552.2309672093506
 L1: 1.0
 L2: 0
 L3: 0