diff --git a/README.md b/README.md
index 0cc70e9a..5439e86e 100644
--- a/README.md
+++ b/README.md
@@ -65,6 +65,7 @@ require("cmake-tools").setup {
         direction = "float", -- 'vertical' | 'horizontal' | 'tab' | 'float'
         close_on_exit = false, -- whether close the terminal when exit
         auto_scroll = true, -- whether auto scroll to the bottom
+        singleton = true, -- single instance, autocloses the opened one, if present
       },
       overseer = {
         new_task_opts = {
@@ -114,6 +115,7 @@ require("cmake-tools").setup {
         direction = "float", -- 'vertical' | 'horizontal' | 'tab' | 'float'
         close_on_exit = false, -- whether close the terminal when exit
         auto_scroll = true, -- whether auto scroll to the bottom
+        singleton = true, -- single instance, autocloses the opened one, if present
       },
       overseer = {
         new_task_opts = {
diff --git a/lua/cmake-tools/const.lua b/lua/cmake-tools/const.lua
index 52c1a119..29ad2ed2 100644
--- a/lua/cmake-tools/const.lua
+++ b/lua/cmake-tools/const.lua
@@ -35,6 +35,7 @@ local const = {
         direction = "float", -- 'vertical' | 'horizontal' | 'tab' | 'float'
         close_on_exit = false, -- whether close the terminal when exit
         auto_scroll = true, -- whether auto scroll to the bottom
+        singleton = true, -- single instance, autocloses the opened one, if present
       },
       overseer = {
         new_task_opts = {
@@ -77,6 +78,7 @@ local const = {
         direction = "float", -- 'vertical' | 'horizontal' | 'tab' | 'float'
         close_on_exit = false, -- whether close the terminal when exit
         auto_scroll = true, -- whether auto scroll to the bottom
+        singleton = true, -- single instance, autocloses the opened one, if present
       },
       overseer = {
         new_task_opts = {
diff --git a/lua/cmake-tools/toggleterm.lua b/lua/cmake-tools/toggleterm.lua
index 27f90729..8255a873 100644
--- a/lua/cmake-tools/toggleterm.lua
+++ b/lua/cmake-tools/toggleterm.lua
@@ -24,6 +24,9 @@ end
 
 function _toggleterm.run(cmd, env_script, env, args, cwd, opts, on_exit, on_output)
   _toggleterm.cmd = cmd .. " " .. table.concat(args, " ")
+  if opts.singleton and _toggleterm.term then
+    _toggleterm.term:close()
+  end
   _toggleterm.term = _terminal.Terminal:new({
     --[[ env = {},             -- key:value table with environmental variables passed to jobstart() ]]
     cmd = _toggleterm.cmd,