diff --git a/README.md b/README.md
index 3d8a4c4..944fd84 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,7 @@ This extension contributes the following settings:
 
 - `auto-arrange-tabs.millis`: The number of milliseconds to move the tab from activation.
 - `auto-arrange-tabs.fixTabs`: The number of fixed tabs from left side. They don't move when time is reached.
+- `auto-arrange-tabs.countPinnedInFixTabs`: Whether pinned tabs are counted as part of the fixed tabs. If false, fixed tabs = pinned tabs + fixTabs.
 
 ## Release Notes
 
diff --git a/extension.js b/extension.js
index 7269514..61222d2 100644
--- a/extension.js
+++ b/extension.js
@@ -40,9 +40,15 @@ const activate = () => {
       // Find tab numbers with matching labels.
       const tabNum = getActiveTabNum(activeGroup);
       console.log("tn", tabNum);
-      if (tabNum < config.get("fixTabs")) return;
+      const pinnedCount = getNotPinnedNum(activeGroup) ?? activeGroup.tabs.length;
+      const fixedTabs = config.get("fixTabs");
+      const countPinnedInFixTabs = config.get("countPinnedInFixTabs");
+      const fixedThreshold = countPinnedInFixTabs
+        ? fixedTabs
+        : pinnedCount + fixedTabs;
+      if (tabNum < fixedThreshold) return;
 
-      const notPinnedNum = getNotPinnedNum(activeGroup);
+      const notPinnedNum = pinnedCount;
       vscode.commands.executeCommand("moveActiveEditor", {
         by: "tab",
         to: "left",
diff --git a/package.json b/package.json
index de43b1e..d3f8e1e 100644
--- a/package.json
+++ b/package.json
@@ -16,6 +16,12 @@
           "scope": "resource",
           "type": "number"
         },
+        "auto-arrange-tabs.countPinnedInFixTabs": {
+          "default": true,
+          "markdownDescription": "Whether pinned tabs are counted as part of the fixed tabs. If false, fixed tabs = pinned tabs + fixTabs.",
+          "scope": "resource",
+          "type": "boolean"
+        },
         "auto-arrange-tabs.millis": {
           "default": 3000,
           "markdowDescription": "Specifies the number of milliseconds to move the tab from activation.",