---
 sympy/physics/secondquant.py |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/sympy/physics/secondquant.py b/sympy/physics/secondquant.py
index 687bf9d..b7ae493 100644
--- a/sympy/physics/secondquant.py
+++ b/sympy/physics/secondquant.py
@@ -2269,8 +2269,8 @@ def _sort_anticommuting_fermions(string1):
     """Sort fermionic operators to canonical order, assuming all pairs 
anticommute.
 
     Uses a bidirectional bubble sort.  Items in string1 are not referenced
-    so in principle they may be any comparable objects. Sorting is
-    done according to the >= operator.
+    so in principle they may be any comparable objects.   The sorting depends 
on the
+    operators '>' and '=='.
 
     If the Pauli principle is violated, an exception is raised.
 
-- 
1.6.5

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