diff --git a/packages/babel-helpers/src/helpers.js b/packages/babel-helpers/src/helpers.js
index 71d2e382aa..3f0689e8ba 100644
--- a/packages/babel-helpers/src/helpers.js
+++ b/packages/babel-helpers/src/helpers.js
@@ -39,7 +39,9 @@ helpers.jsx = defineHelper(`
     if (!props && childrenLength !== 0) {
       // If we're going to assign props.children, we create a new object now
       // to avoid mutating defaultProps.
-      props = {};
+      props = {
+        children: void 0,
+      };
     }
     if (props && defaultProps) {
       for (var propName in defaultProps) {
diff --git a/packages/babel-plugin-transform-react-constant-elements/test/fixtures/constant-elements/inline-elements/output.js b/packages/babel-plugin-transform-react-constant-elements/test/fixtures/constant-elements/inline-elements/output.js
index c3644545ca..7ad3af57ed 100644
--- a/packages/babel-plugin-transform-react-constant-elements/test/fixtures/constant-elements/inline-elements/output.js
+++ b/packages/babel-plugin-transform-react-constant-elements/test/fixtures/constant-elements/inline-elements/output.js
@@ -1,6 +1,6 @@
 var REACT_ELEMENT_TYPE;
 
-function _jsx(type, props, key, children) { if (!REACT_ELEMENT_TYPE) { REACT_ELEMENT_TYPE = typeof Symbol === "function" && Symbol.for && Symbol.for("react.element") || 0xeac7; } var defaultProps = type && type.defaultProps; var childrenLength = arguments.length - 3; if (!props && childrenLength !== 0) { props = {}; } if (props && defaultProps) { for (var propName in defaultProps) { if (props[propName] === void 0) { props[propName] = defaultProps[propName]; } } } else if (!props) { props = defaultProps || {}; } if (childrenLength === 1) { props.children = children; } else if (childrenLength > 1) { var childArray = new Array(childrenLength); for (var i = 0; i < childrenLength; i++) { childArray[i] = arguments[i + 3]; } props.children = childArray; } return { $$typeof: REACT_ELEMENT_TYPE, type: type, key: key === undefined ? null : '' + key, ref: null, props: props, _owner: null }; }
+function _jsx(type, props, key, children) { if (!REACT_ELEMENT_TYPE) { REACT_ELEMENT_TYPE = typeof Symbol === "function" && Symbol.for && Symbol.for("react.element") || 0xeac7; } var defaultProps = type && type.defaultProps; var childrenLength = arguments.length - 3; if (!props && childrenLength !== 0) { props = { children: void 0 }; } if (props && defaultProps) { for (var propName in defaultProps) { if (props[propName] === void 0) { props[propName] = defaultProps[propName]; } } } else if (!props) { props = defaultProps || {}; } if (childrenLength === 1) { props.children = children; } else if (childrenLength > 1) { var childArray = new Array(childrenLength); for (var i = 0; i < childrenLength; i++) { childArray[i] = arguments[i + 3]; } props.children = childArray; } return { $$typeof: REACT_ELEMENT_TYPE, type: type, key: key === undefined ? null : '' + key, ref: null, props: props, _owner: null }; }
 
 var _ref = _jsx("foo", {});