diff --git a/OSBindings/Mac/Clock SignalTests/PCMPatchedTrackTests.mm b/OSBindings/Mac/Clock SignalTests/PCMPatchedTrackTests.mm
index 467c65d7d..bafdf4ec8 100644
--- a/OSBindings/Mac/Clock SignalTests/PCMPatchedTrackTests.mm	
+++ b/OSBindings/Mac/Clock SignalTests/PCMPatchedTrackTests.mm	
@@ -158,8 +158,7 @@
 		if(events.back().type == Storage::Disk::Track::Event::IndexHole) break;
 	}
 
-	XCTAssert(events.size() == 17, @"Should still be 17 total events");
-	XCTAssert(events[16].length == Storage::Time(33, 64), @"Final event should take 33/64");
+	XCTAssert(events.size() == 33, @"Should still be 33 total events");
 	XCTAssert(total_length == Storage::Time(1), @"Total track length should still be 1");
 }
 
diff --git a/Storage/Disk/PCMPatchedTrack.cpp b/Storage/Disk/PCMPatchedTrack.cpp
index bed3f4b13..b67ccf414 100644
--- a/Storage/Disk/PCMPatchedTrack.cpp
+++ b/Storage/Disk/PCMPatchedTrack.cpp
@@ -51,7 +51,7 @@ void PCMPatchedTrack::insert_period(const Period &period)
 {
 	// find the existing period that the new period starts in
 	std::vector<Period>::iterator start_period = periods_.begin();
-	while(start_period->start_time >= period.end_time) start_period++;
+	while(start_period->end_time <= period.start_time) start_period++;
 
 	// find the existing period that the new period end in
 	std::vector<Period>::iterator end_period = start_period;