diff --git a/src/aggregrate-errors.js b/src/aggregrate-errors.js
index 2527e8d..a94e531 100644
--- a/src/aggregrate-errors.js
+++ b/src/aggregrate-errors.js
@@ -114,7 +114,10 @@ function removeInternalFrames(stack) {
 	let internalBasePath = getInternalBasePath();
 
 	return stack.filter((frame) => {
-		return (!frame.location.path.startsWith(internalBasePath));
+		return (
+			!frame.location.anonymous
+			&& !frame.location.path.startsWith(internalBasePath)
+		);
 	});
 }
 
diff --git a/src/parse-stacktrace.js b/src/parse-stacktrace.js
index c3ab138..9c1e8bb 100644
--- a/src/parse-stacktrace.js
+++ b/src/parse-stacktrace.js
@@ -18,16 +18,20 @@ function maybeTrim(value) {
 }
 
 function parseLocation(locationString) {
-	let match = positionRegex.exec(locationString);
-
-	if (match != null) {
-		return {
-			path: match[1],
-			line: parseInt(match[2]),
-			column: parseInt(match[3])
-		};
+	if (locationString === "<anonymous>") {
+		return { anonymous: true };
 	} else {
-		throw new Error(`Could not parse location from string: ${locationString}`);
+		let match = positionRegex.exec(locationString);
+
+		if (match != null) {
+			return {
+				path: match[1],
+				line: parseInt(match[2]),
+				column: parseInt(match[3])
+			};
+		} else {
+			throw new Error(`Could not parse location from string: ${locationString}`);
+		}
 	}
 }