diff --git a/sumpy/expansion/__init__.py b/sumpy/expansion/__init__.py
index 00849b56d1746e02e1f9aa84dd0753223dd4e933..f680347c3e7656f90c5325ab4a00ceea4977f798 100644
--- a/sumpy/expansion/__init__.py
+++ b/sumpy/expansion/__init__.py
@@ -285,7 +285,8 @@ class LinearRecurrenceBasedExpansionTermsWrangler(ExpansionTermsWrangler):
             that representation of the PDE is :math:`\text{coeff} /
             {\text{deriv\_multiplier}^{|\nu|}}`.
         """
-        super(LinearRecurrenceBasedExpansionTermsWrangler, self).__init__(order, dim, max_mi)
+        super(LinearRecurrenceBasedExpansionTermsWrangler, self).__init__(order, dim,
+                max_mi)
         self.deriv_multiplier = deriv_multiplier
 
     def get_coefficient_identifiers(self):
@@ -493,7 +494,8 @@ class HelmholtzExpansionTermsWrangler(LinearRecurrenceBasedExpansionTermsWrangle
         self.helmholtz_k_name = helmholtz_k_name
 
         multiplier = sym.Symbol(helmholtz_k_name)
-        super(HelmholtzExpansionTermsWrangler, self).__init__(order, dim, multiplier, max_mi)
+        super(HelmholtzExpansionTermsWrangler, self).__init__(order, dim, multiplier,
+                max_mi)
 
     def get_pde_dict(self, **kwargs):
         pde_dict = {}
diff --git a/sumpy/tools.py b/sumpy/tools.py
index 8916e33c358702628d97cb03889ecb0f7aa861ec..dd98325bef11bc122c34cf9a34114e5ff19673f0 100644
--- a/sumpy/tools.py
+++ b/sumpy/tools.py
@@ -435,6 +435,7 @@ def rref(mat):
         col += 1
     return mat, pivot_cols
 
+
 def nullspace(m):
     m2 = [[sym.sympify(col) for col in row] for row in m]
     mat, pivot_cols = rref(m2)