diff --git a/sympy/solvers/solvers.py b/sympy/solvers/solvers.py
index 1cf6747..d7e900a 100644
--- a/sympy/solvers/solvers.py
+++ b/sympy/solvers/solvers.py
@@ -246,7 +246,7 @@ def solve(f, *symbols, **flags):
elif strategy == -1:
raise Exception('Could not parse expression %s' % f)
else:
- raise NotImplementedError("No algorithms where implemented to solve equation %s" % f)
+ raise NotImplementedError("No algorithms are implemented to solve equation %s" % f)
if flags.get('simplified', True):
return map(simplify, result)
--
1.6.2