diff --git a/gtk2_ardour/plugin_pin_dialog.cc b/gtk2_ardour/plugin_pin_dialog.cc
index 5b7ed436bd..37f453da7e 100644
--- a/gtk2_ardour/plugin_pin_dialog.cc
+++ b/gtk2_ardour/plugin_pin_dialog.cc
@@ -1865,23 +1865,11 @@ PluginPinWidget::Control::Control (boost::shared_ptr<AutomationControl> c, strin
 	_slider.show ();
 
 	const ARDOUR::ParameterDescriptor& desc = c->desc ();
-	double const lo = c->internal_to_interface (desc.lower);
-	double const up = c->internal_to_interface (desc.upper);
-	double const normal = c->internal_to_interface (desc.normal);
-	double smallstep = desc.smallstep;
-	double largestep = desc.largestep;
-
-	if (smallstep == 0.0) {
-		smallstep = up / 1000.;
-	} else {
-		smallstep = c->internal_to_interface (desc.lower + smallstep);
-	}
-
-	if (largestep == 0.0) {
-		largestep = up / 40.;
-	} else {
-		largestep = c->internal_to_interface (desc.lower + largestep);
-	}
+	double const lo        = c->internal_to_interface (desc.lower);
+	double const up        = c->internal_to_interface (desc.upper);
+	double const normal    = c->internal_to_interface (desc.normal);
+	double const smallstep = c->internal_to_interface (desc.lower + desc.smallstep);
+	double const largestep = c->internal_to_interface (desc.lower + desc.largestep);
 
 	_adjustment.set_lower (lo);
 	_adjustment.set_upper (up);
diff --git a/gtk2_ardour/processor_box.cc b/gtk2_ardour/processor_box.cc
index 84767535a7..eb5fa585c2 100644
--- a/gtk2_ardour/processor_box.cc
+++ b/gtk2_ardour/processor_box.cc
@@ -835,23 +835,11 @@ ProcessorEntry::Control::Control (boost::shared_ptr<AutomationControl> c, string
 		_slider.show ();
 
 		const ARDOUR::ParameterDescriptor& desc = c->desc();
-		double const lo = c->internal_to_interface(desc.lower);
-		double const up = c->internal_to_interface(desc.upper);
-		double const normal = c->internal_to_interface(desc.normal);
-		double smallstep = desc.smallstep;
-		double largestep = desc.largestep;
-
-		if (smallstep == 0.0) {
-			smallstep = up / 1000.;
-		} else {
-			smallstep = c->internal_to_interface(desc.lower + smallstep);
-		}
-
-		if (largestep == 0.0) {
-			largestep = up / 40.;
-		} else {
-			largestep = c->internal_to_interface(desc.lower + largestep);
-		}
+		double const lo        = c->internal_to_interface (desc.lower);
+		double const up        = c->internal_to_interface (desc.upper);
+		double const normal    = c->internal_to_interface (desc.normal);
+		double const smallstep = c->internal_to_interface (desc.lower + desc.smallstep);
+		double const largestep = c->internal_to_interface (desc.lower + desc.largestep);
 
 		_adjustment.set_lower (lo);
 		_adjustment.set_upper (up);