diff --git a/CHANGELOG.md b/CHANGELOG.md
index 27eda183..610a9d01 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -81,6 +81,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - #244 fixed
 - #246 fixed
 - #247 fixed
+- #249 fixed
 
 ## [v0.0.7] - 16 January 2023
 
diff --git a/lua/github-theme/group.lua b/lua/github-theme/group.lua
index 6877bd30..aed77aa9 100644
--- a/lua/github-theme/group.lua
+++ b/lua/github-theme/group.lua
@@ -5,6 +5,14 @@ local M = {}
 
 local function override(groups, spec, ovr)
   ovr = template.parse(ovr, spec)
+  -- If `set = {}` in override,
+  -- the corresponding group is deleted.
+  -- https://github.com/projekt0n/github-nvim-theme/issues/249
+  for k, v in pairs(ovr) do
+    if v.link == '' then
+      groups[k] = nil
+    end
+  end
   return collect.deep_extend(groups, ovr)
 end