diff --git a/src/org/sensorML/process/BinaryOperation_Process.java b/src/org/sensorML/process/BinaryOperation_Process.java
index 2abc7e3..37b03fb 100644
--- a/src/org/sensorML/process/BinaryOperation_Process.java
+++ b/src/org/sensorML/process/BinaryOperation_Process.java
@@ -69,8 +69,12 @@ public void init() throws ProcessException
  
             if (operatorData.getData().getStringValue().equalsIgnoreCase("addition"))
               	operator = OperatorEnum.ADD;
+            // meb: seems some French sneaked in here
             else if (operatorData.getData().getStringValue().equalsIgnoreCase("soustraction"))
                	operator = OperatorEnum.MIN;
+            // meb - 2010-01-27: added subtraction
+            else if (operatorData.getData().getStringValue().equalsIgnoreCase("subtraction"))
+               	operator = OperatorEnum.MIN;
             else if (operatorData.getData().getStringValue().equalsIgnoreCase("multiplication"))
                	operator = OperatorEnum.MUL;
             else if (operatorData.getData().getStringValue().equalsIgnoreCase("division"))