diff --git a/pyewjn/util/complex_integrate.py b/pyewjn/util/complex_integrate.py
index 0bbc857..eeac5ca 100644
--- a/pyewjn/util/complex_integrate.py
+++ b/pyewjn/util/complex_integrate.py
@@ -3,6 +3,9 @@ from scipy.integrate import quad, quadrature
 
 
 def complex_quad(func, a, b, **kwargs):
+	'''
+		Extends scipy.integrate for complex functions.
+	'''
 	def real_func(x):
 		return np.real(func(x))