diff --git a/src/terminal/PageList.zig b/src/terminal/PageList.zig
index 02f9d0272..e1da55ad4 100644
--- a/src/terminal/PageList.zig
+++ b/src/terminal/PageList.zig
@@ -4861,7 +4861,9 @@ test "PageList clone full dirty" {
 
     // Should still be dirty
     try testing.expect(s2.isDirty(.{ .active = .{ .x = 0, .y = 0 } }));
+    try testing.expect(!s2.isDirty(.{ .active = .{ .x = 0, .y = 1 } }));
     try testing.expect(s2.isDirty(.{ .active = .{ .x = 0, .y = 12 } }));
+    try testing.expect(!s2.isDirty(.{ .active = .{ .x = 0, .y = 14 } }));
     try testing.expect(s2.isDirty(.{ .active = .{ .x = 0, .y = 23 } }));
 }
 
diff --git a/src/terminal/page.zig b/src/terminal/page.zig
index 4d3c0b1fd..7137431cf 100644
--- a/src/terminal/page.zig
+++ b/src/terminal/page.zig
@@ -500,16 +500,12 @@ pub const Page = struct {
 
         const other_rows = other.rows.ptr(other.memory)[y_start..y_end];
         const rows = self.rows.ptr(self.memory)[0 .. y_end - y_start];
-        for (rows, other_rows) |*dst_row, *src_row| {
-            try self.cloneRowFrom(other, dst_row, src_row);
-        }
-
-        // Set our dirty range for all the rows we copied
+        const other_dirty_set = other.dirtyBitSet();
         var dirty_set = self.dirtyBitSet();
-        dirty_set.setRangeValue(.{
-            .start = 0,
-            .end = y_end - y_start,
-        }, true);
+        for (rows, 0.., other_rows, y_start..) |*dst_row, dst_y, *src_row, src_y| {
+            try self.cloneRowFrom(other, dst_row, src_row);
+            if (other_dirty_set.isSet(src_y)) dirty_set.set(dst_y);
+        }
 
         // We should remain consistent
         self.assertIntegrity();