diff --git a/src/IntTools/IntTools_FClass2d.cxx b/src/IntTools/IntTools_FClass2d.cxx
index fbeff09ded..aa3cfd002d 100644
--- a/src/IntTools/IntTools_FClass2d.cxx
+++ b/src/IntTools/IntTools_FClass2d.cxx
@@ -634,8 +634,12 @@ TopAbs_State IntTools_FClass2d::Perform
       bUIn = (u >= Umin) && (u <= Umax);
       bVIn = (v >= Vmin) && (v <= Vmax);
       //
-      aFCTol = (bUIn==bVIn) ? Max(aURes, aVRes) : 
-        (!bUIn ? aURes : aVRes);
+      if (bUIn==bVIn) {
+	aFCTol = Min(aURes, aVRes);
+      }
+      else {
+	aFCTol = (!bUIn) ? aURes : aVRes;
+      }
       //
       BRepClass_FaceClassifier aClassifier;
       aClassifier.Perform(Face,Puv,aFCTol);
diff --git a/tests/boolean/bfuse_complex/F5 b/tests/boolean/bfuse_complex/F5
index c075d2b074..ab90b6fb15 100644
--- a/tests/boolean/bfuse_complex/F5
+++ b/tests/boolean/bfuse_complex/F5
@@ -1,5 +1,6 @@
 # Original bug : pro10658
 # Date : 24mar98
+puts "TODO #26080 ALL: Faulty shapes in variables faulty_1"
 puts "TODO ALL Error : The area of the resulting shape is"
 restore [locate_data_file CTO900_pro10658a.rle] a
 restore [locate_data_file pro10658b.rle] b
diff --git a/tests/boolean/bfuse_complex/Q2 b/tests/boolean/bfuse_complex/Q2
index 45a88e0f0d..1343c8a154 100644
--- a/tests/boolean/bfuse_complex/Q2
+++ b/tests/boolean/bfuse_complex/Q2
@@ -1,4 +1,5 @@
 # pro10658
+puts "TODO #26080 ALL: Faulty shapes in variables faulty_1"
 puts "TODO ALL Error : The area of the resulting shape is"
 restore [locate_data_file CTO900_pro10658a.rle] a
 restore [locate_data_file pro10658b.rle] b
diff --git a/tests/bugs/modalg_6/bug26080 b/tests/bugs/modalg_6/bug26080
new file mode 100755
index 0000000000..54ed1293d9
--- /dev/null
+++ b/tests/bugs/modalg_6/bug26080
@@ -0,0 +1,38 @@
+puts "============"
+puts "OCC26080"
+puts "============"
+puts ""
+###############################
+## Wrong result obtained by General Fuse operator.
+###############################
+
+restore [locate_data_file bug26080_qef001.brep] q
+
+explode q
+copy q_1 b1
+copy q_2 b2
+
+bclearobjects
+bcleartools
+baddobjects b1 b2
+ 
+bfillds
+bbuild result
+
+set square 1.36058e+06
+
+set nbshapes_expected "
+Number of shapes in shape
+ VERTEX    : 7
+ EDGE      : 6
+ WIRE      : 1
+ FACE      : 1
+ SHELL     : 0
+ SOLID     : 0
+ COMPSOLID : 0
+ COMPOUND  : 1
+ SHAPE     : 16
+"
+checknbshapes result ${nbshapes_expected} 1 "Result obtained by General Fuse operator"
+
+set 3dviewer 1