diff --git a/lib/torque/provider/windshaft.js b/lib/torque/provider/windshaft.js
index 5aed40a..ae37dc2 100644
--- a/lib/torque/provider/windshaft.js
+++ b/lib/torque/provider/windshaft.js
@@ -194,7 +194,8 @@
       opt = opt || {};
       if (this.options.steps !== steps) {
         this.options.steps = steps;
-        this.options.step = (this.options.end - this.options.start)/this.getSteps();
+        // If you have N frames, there are N-1 steps between them
+        this.options.step = (this.options.end - this.options.start) / (this.getSteps() - 1);
         this.options.step = this.options.step || 1;
         if (!opt.silent) this.reload();
       }