diff --git a/tests/bugs/modalg_6/bug26640 b/tests/bugs/modalg_6/bug26640
new file mode 100644
index 0000000000..ff4e49ff21
--- /dev/null
+++ b/tests/bugs/modalg_6/bug26640
@@ -0,0 +1,18 @@
+puts "========"
+puts "OCC26640"
+puts "========"
+puts ""
+#################################################
+# ShapeFix_Edge::FixAddPCurve problem in OCC 6.8
+#################################################
+
+
+restore [locate_data_file OCC26640-bf.brep] a 
+fixshape aa a
+
+pcurve aa
+
+v2d
+2dfit
+
+set only_screen_axo 1