diff --git a/src/Bundle.js b/src/Bundle.js
index a9885c4..ad81803 100644
--- a/src/Bundle.js
+++ b/src/Bundle.js
@@ -345,7 +345,7 @@ export default class Bundle {
 
 						findParent( this.entryModule );
 
-						throw new Error(
+						this.onwarn(
 							`Module ${a.id} may be unable to evaluate without ${b.id}, but is included first due to a cyclical dependency. Consider swapping the import statements in ${parent} to ensure correct ordering`
 						);
 					}
diff --git a/test/function/cycles-pathological/_config.js b/test/function/cycles-pathological/_config.js
index 156a2f3..4e939af 100644
--- a/test/function/cycles-pathological/_config.js
+++ b/test/function/cycles-pathological/_config.js
@@ -1,18 +1,17 @@
 var assert = require( 'assert' );
 
+var warned;
+
 module.exports = {
 	description: 'resolves pathological cyclical dependencies gracefully',
 	babel: true,
-	exports: function ( exports ) {
-		assert.ok( exports.a.isA );
-		assert.ok( exports.b1.isA );
-		assert.ok( exports.b1.isB );
-		assert.ok( exports.b2.isA );
-		assert.ok( exports.b2.isB );
-		assert.ok( exports.c1.isC );
-		assert.ok( exports.c1.isD );
-		assert.ok( exports.c2.isC );
-		assert.ok( exports.c2.isD );
-		assert.ok( exports.d.isD );
+	options: {
+		onwarn: function ( message ) {
+			assert.ok( /Module .+B\.js may be unable to evaluate without .+A\.js, but is included first due to a cyclical dependency. Consider swapping the import statements in .+main\.js to ensure correct ordering/.test( message ) );
+			warned = true;
+		}
+	},
+	runtimeError: function () {
+		assert.ok( warned );
 	}
 };
diff --git a/test/function/iife-strong-dependencies/_config.js b/test/function/iife-strong-dependencies/_config.js
index 10cdaca..f1d7ee1 100644
--- a/test/function/iife-strong-dependencies/_config.js
+++ b/test/function/iife-strong-dependencies/_config.js
@@ -1,15 +1,16 @@
 var assert = require( 'assert' );
 
+var warned;
+
 module.exports = {
 	description: 'does not treat references inside IIFEs as weak dependencies', // edge case encountered in THREE.js codebase
-	exports: function ( exports ) {
-		assert.ok( exports.a1.isA );
-		assert.ok( exports.b1.isB );
-		assert.ok( exports.c1.isC );
-		assert.ok( exports.d1.isD );
-		assert.ok( exports.a2.isA );
-		assert.ok( exports.b2.isB );
-		assert.ok( exports.c2.isC );
-		assert.ok( exports.d2.isD );
+	options: {
+		onwarn: function ( message ) {
+			assert.ok( /Module .+D\.js may be unable to evaluate without .+C\.js, but is included first due to a cyclical dependency. Consider swapping the import statements in .+main\.js to ensure correct ordering/.test( message ) );
+			warned = true;
+		}
+	},
+	runtimeError: function () {
+		assert.ok( warned );
 	}
 };