diff --git a/src/hb-subset-instancer-solver.cc b/src/hb-subset-instancer-solver.cc
index 549eef30e..83a69cfe3 100644
--- a/src/hb-subset-instancer-solver.cc
+++ b/src/hb-subset-instancer-solver.cc
@@ -171,7 +171,7 @@ _solve (Triple tent, Triple axisLimit, bool negative = false)
   if (gain > outGain)
   {
     // Crossing point on the axis.
-    float crossing = peak + ((1 - gain) * (upper - peak) / (1 - outGain));
+    float crossing = peak + (1 - gain) * (upper - peak);
 
     Triple loc{axisDef, peak, crossing};
     float scalar = 1.f;