diff --git a/src/nvim/decoration.c b/src/nvim/decoration.c
index e4828bcc31..792204bdbc 100644
--- a/src/nvim/decoration.c
+++ b/src/nvim/decoration.c
@@ -121,7 +121,8 @@ void decor_redraw(buf_T *buf, int row1, int row2, int col1, DecorInline decor)
 
 void decor_redraw_sh(buf_T *buf, int row1, int row2, DecorSignHighlight sh)
 {
-  if (sh.hl_id || (sh.url != NULL) || (sh.flags & (kSHIsSign|kSHSpellOn|kSHSpellOff))) {
+  if (sh.hl_id || (sh.url != NULL)
+      || (sh.flags & (kSHIsSign | kSHSpellOn | kSHSpellOff | kSHConceal))) {
     if (row2 >= row1) {
       redraw_buf_range_later(buf, row1 + 1, row2 + 1);
     }
diff --git a/test/functional/ui/decorations_spec.lua b/test/functional/ui/decorations_spec.lua
index 951188614b..e877dd2283 100644
--- a/test/functional/ui/decorations_spec.lua
+++ b/test/functional/ui/decorations_spec.lua
@@ -1742,6 +1742,35 @@ describe('extmark decorations', function()
     ]]}
   end)
 
+  it('redraws properly when adding/removing conceal on non-current line', function()
+    screen:try_resize(50, 5)
+    api.nvim_buf_set_lines(0, 0, -1, true, {'abcd', 'efgh','ijkl', 'mnop'})
+    command('setlocal conceallevel=2')
+    screen:expect{grid=[[
+      ^abcd                                              |
+      efgh                                              |
+      ijkl                                              |
+      mnop                                              |
+                                                        |
+    ]]}
+    api.nvim_buf_set_extmark(0, ns, 2, 1, {end_col=3, conceal=''})
+    screen:expect{grid=[[
+      ^abcd                                              |
+      efgh                                              |
+      il                                                |
+      mnop                                              |
+                                                        |
+    ]]}
+    api.nvim_buf_clear_namespace(0, ns, 0, -1)
+    screen:expect{grid=[[
+      ^abcd                                              |
+      efgh                                              |
+      ijkl                                              |
+      mnop                                              |
+                                                        |
+    ]]}
+  end)
+
   it('avoids redraw issue #20651', function()
     exec_lua[[
       vim.cmd.normal'10oXXX'