diff --git a/product/ERP5Type/Cache.py b/product/ERP5Type/Cache.py
index d65e2b7d6750ad433a4cec172b05be92ced21d3c..33c1252723b9b397b5547dfd24adfc85929bb538 100644
--- a/product/ERP5Type/Cache.py
+++ b/product/ERP5Type/Cache.py
@@ -232,7 +232,7 @@ allow_class(CachingMethod)
 
 # TransactionCache is a cache per transaction. The purpose of this cache is
 # to accelerate some heavy read-only operations. Note that this must not be
-# enabled when a trasaction may modify ZODB objects.
+# enabled when a transaction may modify ZODB objects.
 def getReadOnlyTransactionCache(context):
   """Get the transaction cache.
   """
diff --git a/product/ERP5Type/Constraint/PropertyTypeValidity.py b/product/ERP5Type/Constraint/PropertyTypeValidity.py
index e63790b6afe1a12c7a714246f03768393731c40d..345c0d6369456f15fbed77506a98b6a1e8387008 100644
--- a/product/ERP5Type/Constraint/PropertyTypeValidity.py
+++ b/product/ERP5Type/Constraint/PropertyTypeValidity.py
@@ -39,7 +39,7 @@ except NameError:
 class PropertyTypeValidity(Constraint):
   """
     This constraint class allows to check / fix type of each
-    attributes define in the PropertySheets.
+    attributes defined in the PropertySheets.
     This Constraint is always created in ERP5Type/Utils.py
   """