diff --git a/tsmark/__init__.py b/tsmark/__init__.py
index 7121253..82c4191 100644
--- a/tsmark/__init__.py
+++ b/tsmark/__init__.py
@@ -2,7 +2,7 @@ import argparse
 
 from tsmark.video_annotator import Marker
 
-VERSION = "0.7.12"
+VERSION = "0.7.13"
 
 
 class SmartFormatter(argparse.HelpFormatter):
diff --git a/tsmark/video_annotator.py b/tsmark/video_annotator.py
index e2de2f6..2e14a39 100755
--- a/tsmark/video_annotator.py
+++ b/tsmark/video_annotator.py
@@ -506,6 +506,18 @@ class Marker:
         "Return x0/x1/y1/y0 side depending which the xy coord is farthest"
         snap_map = {True: {True: "y1", False: "x0"}, False: {True: "x1", False: "y0"}}
 
+        if xy[1] > bbox["y0"] and xy[1] < bbox["y1"]:
+            if xy[0] < bbox["x0"]:
+                return "x1"
+            if xy[0] > bbox["x1"]:
+                return "x0"
+
+        if xy[0] > bbox["x0"] and xy[0] < bbox["x1"]:
+            if xy[1] < bbox["y0"]:
+                return "y1"
+            if xy[1] > bbox["y1"]:
+                return "y0"
+
         x_diff = xy[0] - bbox["cx"]
         y_diff = xy[1] - bbox["cy"]