diff --git a/src/ShapeAnalysis/ShapeAnalysis_Edge.cdl b/src/ShapeAnalysis/ShapeAnalysis_Edge.cdl
index 077aa9c03a..11c054fe41 100644
--- a/src/ShapeAnalysis/ShapeAnalysis_Edge.cdl
+++ b/src/ShapeAnalysis/ShapeAnalysis_Edge.cdl
@@ -24,6 +24,7 @@ class Edge from ShapeAnalysis
     --          (3d and pcurve(s) consistency, their adjacency to the vertices).
 
 uses
+    Curve    from Adaptor3d,
     Pnt      from gp,
     Pnt2d    from gp,
     Vec2d    from gp,
@@ -275,7 +276,20 @@ is
 	--          FAIL1 - edge does not have 3d curve
 	--          FAIL2 - if some computational problems were encountered (when
 	--                  projecting points on curves)
-		
+
+    ComputeDeviation (myclass; CRef         : Curve from Adaptor3d;
+                               Other        : Curve from Adaptor3d;
+                               SameParameter: Boolean;
+                               dev          : in out Real;
+                               NCONTROL     : Integer)
+    returns Boolean;
+        ---Purpose: Computes the maximal deviation between the two curve
+        --          representations.
+        --          dev is an input/output parameter and contains the computed
+        --          deviation (should be initialized with 0. for the first call).
+        --          Used by CheckSameParameter().
+        ---Returns: True if the computation has been successful and False otherwise.
+        
     CheckOverlapping(me :in out; theEdge1, theEdge2 : Edge from TopoDS; 
     	    	     theTolOverlap:in out Real; theDomainDist : Real =0.0) returns Boolean;
 	---Purpose: Checks the first edge is overlapped with second edge.
diff --git a/src/ShapeAnalysis/ShapeAnalysis_Edge.cxx b/src/ShapeAnalysis/ShapeAnalysis_Edge.cxx
index 74207960e1..09a5386988 100644
--- a/src/ShapeAnalysis/ShapeAnalysis_Edge.cxx
+++ b/src/ShapeAnalysis/ShapeAnalysis_Edge.cxx
@@ -705,11 +705,11 @@ Standard_Boolean ShapeAnalysis_Edge::CheckVertexTolerance(const TopoDS_Edge& edg
 //note: This function is made from Validate() in BRepCheck_Edge.cxx
 //=======================================================================
 
-static Standard_Boolean ComputeDeviation (const Adaptor3d_Curve& CRef,
-					  const Adaptor3d_Curve& Other,
-					  const Standard_Boolean SameParameter,
-					  Standard_Real &dev,
-					  const Standard_Integer NCONTROL)
+Standard_Boolean ShapeAnalysis_Edge::ComputeDeviation (const Adaptor3d_Curve& CRef,
+                                                       const Adaptor3d_Curve& Other,
+                                                       const Standard_Boolean SameParameter,
+                                                       Standard_Real &dev,
+                                                       const Standard_Integer NCONTROL)
 {
   Standard_Boolean OK = Standard_True;
   Standard_Real dev2 = dev*dev;