diff --git a/dom/svg/SVGMarkerElement.cpp b/dom/svg/SVGMarkerElement.cpp
index f1f592deb45a..5467c4ac11cb 100644
--- a/dom/svg/SVGMarkerElement.cpp
+++ b/dom/svg/SVGMarkerElement.cpp
@@ -109,13 +109,10 @@ void SVGMarkerElement::SetOrientToAuto() {
   mOrient.SetBaseType(SVG_MARKER_ORIENT_AUTO, this, IgnoreErrors());
 }
 
-void SVGMarkerElement::SetOrientToAngle(DOMSVGAngle& angle, ErrorResult& rv) {
-  float f = angle.Value();
-  if (!std::isfinite(f)) {
-    rv.ThrowTypeError("Unknown or invalid type");
-    return;
-  }
-  mOrient.SetBaseValue(f, angle.UnitType(), this, true);
+void SVGMarkerElement::SetOrientToAngle(DOMSVGAngle& aAngle) {
+  nsAutoString angle;
+  aAngle.GetValueAsString(angle);
+  mOrient.SetBaseValueString(angle, this, true);
 }
 
 //----------------------------------------------------------------------
diff --git a/dom/svg/SVGMarkerElement.h b/dom/svg/SVGMarkerElement.h
index 0fd1e902bd50..3904b36a87c6 100644
--- a/dom/svg/SVGMarkerElement.h
+++ b/dom/svg/SVGMarkerElement.h
@@ -65,7 +65,7 @@ class SVGMarkerElement final : public SVGMarkerElementBase {
   already_AddRefed<DOMSVGAnimatedEnumeration> OrientType();
   already_AddRefed<DOMSVGAnimatedAngle> OrientAngle();
   void SetOrientToAuto();
-  void SetOrientToAngle(DOMSVGAngle& angle, ErrorResult& rv);
+  void SetOrientToAngle(DOMSVGAngle& aAngle);
 
  protected:
   void SetParentCoordCtxProvider(SVGViewportElement* aContext);
diff --git a/dom/webidl/SVGMarkerElement.webidl b/dom/webidl/SVGMarkerElement.webidl
index 4b4d205f43f2..1c5ab43d80b7 100644
--- a/dom/webidl/SVGMarkerElement.webidl
+++ b/dom/webidl/SVGMarkerElement.webidl
@@ -40,7 +40,6 @@ interface SVGMarkerElement : SVGElement {
   readonly attribute SVGAnimatedAngle orientAngle;
 
   undefined setOrientToAuto();
-  [Throws]
   undefined setOrientToAngle(SVGAngle angle);
 };
 
diff --git a/testing/web-platform/tests/svg/types/scripted/SVGAnimatedEnumeration-SVGMarkerElement.html b/testing/web-platform/tests/svg/types/scripted/SVGAnimatedEnumeration-SVGMarkerElement.html
index e0266fa612b9..61c44d0d178a 100644
--- a/testing/web-platform/tests/svg/types/scripted/SVGAnimatedEnumeration-SVGMarkerElement.html
+++ b/testing/web-platform/tests/svg/types/scripted/SVGAnimatedEnumeration-SVGMarkerElement.html
@@ -62,7 +62,7 @@ test(function() {
   assert_equals(markerElement.orientType.baseVal, SVGMarkerElement.SVG_MARKER_ORIENT_AUTO);
 
   // Switch to 'Pi/2 rad' value - via setOrientToAngle().
-  anglePiHalfRad = createSVGAngle();
+  let anglePiHalfRad = createSVGAngle();
   anglePiHalfRad.newValueSpecifiedUnits(SVGAngle.SVG_ANGLETYPE_RAD, (Math.PI / 2).toFixed(2));
   markerElement.setOrientToAngle(anglePiHalfRad);
   assert_equals(markerElement.orientAngle.baseVal.value.toFixed(1), "90.0");
@@ -78,7 +78,7 @@ test(function() {
   assert_equals(markerElement.getAttribute('orient'), "auto");
 
   // Switch to '20deg' value - via setOrientToAngle().
-  angle20deg = createSVGAngle();
+  let angle20deg = createSVGAngle();
   angle20deg.newValueSpecifiedUnits(SVGAngle.SVG_ANGLETYPE_DEG, 20);
   markerElement.setOrientToAngle(angle20deg);
   assert_equals(markerElement.orientAngle.baseVal.value, 20);
@@ -137,6 +137,12 @@ test(function() {
   markerElement.setAttribute('orient', '1turn');
   assert_equals(markerElement.orientAngle.baseVal.value, 360);
   assert_equals(markerElement.orientAngle.baseVal.unitType, SVGAngle.SVG_ANGLETYPE_UNKNOWN);
+
+  let angle = createSVGAngle();
+  angle = markerElement.orientAngle.baseVal;
+  angle.value = 720;
+  markerElement.setOrientToAngle(angle);
+  assert_equals(markerElement.getAttribute('orient'), "2turn");
 }, "Test turn units");
 
 test(function() {