diff --git a/tensortools/ensemble.py b/tensortools/ensemble.py
index a7bf492..9d1a01f 100644
--- a/tensortools/ensemble.py
+++ b/tensortools/ensemble.py
@@ -29,7 +29,7 @@ def __init__(self, nonneg=False, fit_method=None, fit_options=dict()):
         # Model parameters
         self._nonneg = nonneg
 
-        # Determinine optimization method. If user input is None, try to use a
+        # Determine optimization method. If user input is None, try to use a
         # reasonable default. Otherwise check that it is callable.
         if fit_method is None:
             self._fit_method = optimize.ncp_bcd if nonneg else optimize.cp_als