diff --git a/src/conversions.rs b/src/conversions.rs
index a6065b055..2866570e3 100644
--- a/src/conversions.rs
+++ b/src/conversions.rs
@@ -622,6 +622,18 @@ impl ToJSValConvertible for *mut JSObject {
     }
 }
 
+// https://heycam.github.io/webidl/#es-object
+impl FromJSValConvertible for *mut JSObject {
+    type Config = ();
+    #[inline]
+    unsafe fn from_jsval(_cx: *mut JSContext,
+                         val: HandleValue,
+                         _option: ())
+                         -> Result<ConversionResult<*mut JSObject>, ()> {
+        Ok(ConversionResult::Success(val.to_object_or_null()))
+    }
+}
+
 // https://heycam.github.io/webidl/#es-object
 impl ToJSValConvertible for NonZero<*mut JSObject> {
     #[inline]
@@ -630,3 +642,15 @@ impl ToJSValConvertible for NonZero<*mut JSObject> {
         maybe_wrap_object_value(cx, rval);
     }
 }
+
+// https://heycam.github.io/webidl/#es-object
+impl FromJSValConvertible for NonZero<*mut JSObject> {
+    type Config = ();
+    #[inline]
+    unsafe fn from_jsval(_cx: *mut JSContext,
+                         val: HandleValue,
+                         _option: ())
+                         -> Result<ConversionResult<NonZero<*mut JSObject>>, ()> {
+        Ok(ConversionResult::Success(NonZero::new(val.to_object())))
+    }
+}