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 9e04e3b63..802382b82 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
@@ -804,6 +804,16 @@ public class ScriptDocument {
         // Strip array brackets
         baseName = baseName.replace("[]", "").trim();
 
+        // Check primitive types first
+        if (TypeResolver.isPrimitiveType(baseName)) {
+            return TypeInfo.forPrimitive(baseName);
+        }
+
+        // Check for String (common case)
+        if (baseName.equals("String")) {
+            return typeResolver.resolveFullName("java.lang.String");
+        }
+
         // Check script-defined types FIRST
         if (scriptTypes.containsKey(baseName)) {
             return scriptTypes.get(baseName);
diff --git a/src/main/java/noppes/npcs/client/gui/util/script/interpreter/TypeResolver.java b/src/main/java/noppes/npcs/client/gui/util/script/interpreter/TypeResolver.java
index a962ec9e2..80bbea054 100644
--- a/src/main/java/noppes/npcs/client/gui/util/script/interpreter/TypeResolver.java
+++ b/src/main/java/noppes/npcs/client/gui/util/script/interpreter/TypeResolver.java
@@ -370,6 +370,16 @@ public class TypeResolver {
         }
     }
 
+
+    /**
+     * Check if a type name is a primitive type.
+     */
+    public static boolean isPrimitiveType(String typeName) {
+        return typeName.equals("boolean") || typeName.equals("byte") || typeName.equals("char") ||
+                typeName.equals("short") || typeName.equals("int") || typeName.equals("long") ||
+                typeName.equals("float") || typeName.equals("double") || typeName.equals("void");
+    }
+    
     /**
      * Represents a type occurrence within generic content.
      */