diff --git a/pyomo/common/dependencies.py b/pyomo/common/dependencies.py
index 55a21916299..a0717dba883 100644
--- a/pyomo/common/dependencies.py
+++ b/pyomo/common/dependencies.py
@@ -816,7 +816,7 @@ def _finalize_numpy(np, available):
         numeric_types._native_boolean_types.add(t)
     _complex = [np.complex_, np.complex64, np.complex128]
     # complex192 and complex256 may or may not be defined in this
-    # particular numpy build (it depends ono platform and version).
+    # particular numpy build (it depends on platform and version).
     # Register them only if they are present
     if hasattr(np, 'complex192'):
         _complex.append(np.complex192)