diff --git a/src/main/java/noppes/npcs/client/gui/util/GuiScriptTextArea.java b/src/main/java/noppes/npcs/client/gui/util/GuiScriptTextArea.java
index 977b213b9..3c1f40850 100644
--- a/src/main/java/noppes/npcs/client/gui/util/GuiScriptTextArea.java
+++ b/src/main/java/noppes/npcs/client/gui/util/GuiScriptTextArea.java
@@ -2375,7 +2375,7 @@ public class GuiScriptTextArea extends GuiNpcTextField {
             // Auto-pair insertion: when opening a quote/brace/bracket is typed,
             // insert a matching closer and place caret between the pair.
             // But only if the current position is not excluded (e.g., inside a comment or string)
-            if (!container.getDocument().isExcluded(cursorPos)) {
+            if (!container.getDocument().isExcludedInclusive(cursorPos)) {
                 if (c == '"') {
                     setText(before + "\"\"" + after, true);
                     selection.reset(before.length() + 1);
diff --git a/src/main/java/noppes/npcs/client/gui/util/script/interpreter/ScriptDocument.java b/src/main/java/noppes/npcs/client/gui/util/script/interpreter/ScriptDocument.java
index 74f69a175..a571f9576 100644
--- a/src/main/java/noppes/npcs/client/gui/util/script/interpreter/ScriptDocument.java
+++ b/src/main/java/noppes/npcs/client/gui/util/script/interpreter/ScriptDocument.java
@@ -444,6 +444,17 @@ public class ScriptDocument {
 
     
     public boolean isExcluded(int position) {
+        for (int[] range : excludedRanges) {
+            if (position >= range[0] && position < range[1]) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /** Inclusive version for precision with end offset
+     Check GuiScriptTextArea#handleCharacterInput */
+    public boolean isExcludedInclusive(int position) {
         for (int[] range : excludedRanges) {
             if (position >= range[0] && position <= range[1]) {
                 return true;
@@ -4739,7 +4750,7 @@ public class ScriptDocument {
     /**
      * Mark chained field accesses like: mc.player.world, array.length, this.field, etc.
      * This handles dot-separated access chains and colors each segment appropriately.
-     * Does NOT mark method calls (identifiers followed by parentheses) - those are handled by markMethodCalls.
+     * Does NOT mark method calls (identifiers followed by parentheses) - those are handled by {@link #markMethodCalls}.
      */
     private void markChainedFieldAccesses(List<ScriptLine.Mark> marks) {
         FieldChainMarker marker = new FieldChainMarker(this, text);