diff --git a/src/path/PathItem.Boolean.js b/src/path/PathItem.Boolean.js
index 5002026f..22b4383b 100644
--- a/src/path/PathItem.Boolean.js
+++ b/src/path/PathItem.Boolean.js
@@ -673,22 +673,13 @@ PathItem.inject(new function() {
             return null;
         }
 
-        function findStartSegment(inter, next) {
-            while (inter) {
-                var seg = inter._segment;
-                if (isStart(seg))
-                    return seg;
-                inter = inter[next ? '_next' : '_prev'];
-            }
-        }
-
         for (var i = 0, l = segments.length; i < l; i++) {
             var seg = segments[i],
                 path = null,
                 finished = false;
-            // Do not start a chain with already visited segments, and segments
-            // that are not going to be part of the resulting operation.
-            if (!isValid(seg))
+            // Do not start a chain with segments that have multiple
+            // intersections or invalid segments.
+            if (seg._intersection && seg._intersection._next || !isValid(seg))
                 continue;
             start = otherStart = null;
             while (!finished) {
@@ -753,17 +744,7 @@ PathItem.inject(new function() {
                     if (isStart(seg)) {
                         drawSegment(seg, null, 'done', i, 'red');
                         finished = true;
-                    } else if (inter) {
-                        var found = findStartSegment(inter, true)
-                            || findStartSegment(inter, false);
-                        if (found) {
-                            seg = found;
-                            drawSegment(seg, null, 'done multiple', i, 'red');
-                            finished = true;
-                            break;
-                        }
-                    }
-                    if (!finished) {
+                    } else {
                         // We didn't manage to switch, so stop right here.
                         console.error('Visited segment encountered, aborting #'
                                 + pathCount + '.'