diff --git a/commands/mix_test.py b/commands/mix_test.py
index 9efce451..ddc28ca6 100644
--- a/commands/mix_test.py
+++ b/commands/mix_test.py
@@ -94,6 +94,12 @@ def run(self, _edit):
         if regions[-1].intersects(selected_lines_region)
       ]
 
+    unique_intersecting_test_tuples = \
+      unique_items([tuple(r.to_tuple() for r in regions) for regions in intersecting_test_regions])
+
+    intersecting_test_regions = \
+      [tuple(sublime.Region(*t) for t in tuples) for tuples in unique_intersecting_test_tuples]
+
     grouped_isecting_by_describe_dict, test_to_describe_dict = \
       group_by_describe_block_regions(intersecting_test_regions)
 
diff --git a/commands/utils.py b/commands/utils.py
index de07345a..6606e3a5 100644
--- a/commands/utils.py
+++ b/commands/utils.py
@@ -18,6 +18,16 @@ def print_status_msg(msg):
   print(PRINT_PREFIX, msg)
   sublime.status_message(PRINT_PREFIX + ' ' + msg)
 
+def unique_items(items):
+  unique_items, seen_items = [], set()
+
+  for item in items:
+    if item not in seen_items:
+      unique_items.append(item)
+      seen_items.add(item)
+
+  return unique_items
+
 def expand_scope_right(view, begin_point, scope):
   end_point = next(
     (pt for pt in range(begin_point, view.size()) if not view.match_selector(pt, scope)),