diff --git a/Lib/fontTools/varLib/instancer/solver.py b/Lib/fontTools/varLib/instancer/solver.py
index 468f04277..b604525bb 100644
--- a/Lib/fontTools/varLib/instancer/solver.py
+++ b/Lib/fontTools/varLib/instancer/solver.py
@@ -100,7 +100,7 @@ def _solve(tent, axisLimit, negative=False):
     if gain > outGain:
 
         # Crossing point on the axis.
-        crossing = peak + ((1 - gain) * (upper - peak) / (1 - outGain))
+        crossing = peak + (1 - gain) * (upper - peak)
 
         loc = (axisDef, peak, crossing)
         scalar = 1
diff --git a/Tests/varLib/instancer/solver_test.py b/Tests/varLib/instancer/solver_test.py
index 241a824cb..8b2a8fc47 100644
--- a/Tests/varLib/instancer/solver_test.py
+++ b/Tests/varLib/instancer/solver_test.py
@@ -91,6 +91,25 @@ class RebaseTentTest(object):
                     (-1, (-1, -1, 0)),
                 ],
             ),
+            pytest.param(
+                (0.0, 0.5, 1),
+                (0, 0.5, 0.75),
+                [
+                    (1, None),
+                    (-0.5, (0, 1, 1)),
+                    (-1, (-1, -1, 0)),
+                ],
+            ),
+            pytest.param(
+                (0.0, 0.5, 1),
+                (0, 0.25, 0.8),
+                [
+                    (0.5, None),
+                    (0.5, (0, 0.45454545, 0.9090909090)),
+                    (-0.1, (0.9090909090, 1.0, 1.0)),
+                    (-0.5, (-1, -1, 0)),
+                ],
+            ),
             # Case 3a/1neg
             pytest.param(
                 (0.0, 0.5, 2),