diff --git a/Modules/ThirdParty/OssimPlugins/src/ossim/ossimSarSensorModel.cpp b/Modules/ThirdParty/OssimPlugins/src/ossim/ossimSarSensorModel.cpp
index bb8903ad981a1857fbedf1311cf626138c5bd035..61e85f63c090b292f148b0019ddef1ac3ec59689 100644
--- a/Modules/ThirdParty/OssimPlugins/src/ossim/ossimSarSensorModel.cpp
+++ b/Modules/ThirdParty/OssimPlugins/src/ossim/ossimSarSensorModel.cpp
@@ -315,7 +315,7 @@ void ossimSarSensorModel::worldToLineSampleYZ(const ossimGpt& worldPt, ossimDpt
 
       // TODO check for small NormesS to avoid division by zero ?
       // Should never happen ...
-      assert(NormesS>1e-6);
+      assert(NormeS>1e-6);
       z = NormeS - PS2/NormeS;
 
       double distance = sqrt((sensorPos[0]-inputPt[0])*(sensorPos[0]-inputPt[0]) +