diff --git a/compiler/src/pre_process.ts b/compiler/src/pre_process.ts
index a95b88b..01abceb 100644
--- a/compiler/src/pre_process.ts
+++ b/compiler/src/pre_process.ts
@@ -30,8 +30,8 @@ function preProcess(source: string): string {
   if (/\.ets$/.test(this.resourcePath)) {
     const result: ReplaceResult = sourceReplace(source, this.resourcePath);
     const newContent: string = result.content;
-    const log: LogInfo[] = result.log;
-    log.concat(validateUISyntax(source, newContent, this.resourcePath, this.resourceQuery));
+    const log: LogInfo[] = result.log.concat(validateUISyntax(source, newContent,
+      this.resourcePath, this.resourceQuery));
     if (log.length) {
       emitLogInfo(this, log);
     }
diff --git a/compiler/src/validate_ui_syntax.ts b/compiler/src/validate_ui_syntax.ts
index 5759496..e60fcf5 100644
--- a/compiler/src/validate_ui_syntax.ts
+++ b/compiler/src/validate_ui_syntax.ts
@@ -189,7 +189,8 @@ function validateEntryCount(result: DecoratorResult, fileQuery: string,
   if (result.entryCount !== 1 && fileQuery === '?entry') {
     log.push({
       type: LogType.ERROR,
-      message: `A page must have one and only one '@Entry' decorator with a struct.`,
+      message: `A page configured in 'config.json' must have one and only one '@Entry' `
+        + `decorator with a struct.`,
       fileName: fileName
     });
   }
@@ -266,8 +267,13 @@ function checkDecorators(node: ts.MissingDeclaration | ts.ExportAssignment, resu
     addLog(LogType.WARN, message, component.pos, log, sourceFile);
   }
   if (BUILDIN_STYLE_NAMES.has(componentName)) {
-    const message: string =
-      `The struct '${componentName}' cannot have the same name as the built-in attribute '${componentName}'.`;
+    const message: string = `The struct '${componentName}' cannot have the same name ` +
+      `as the built-in attribute '${componentName}'.`;
+    addLog(LogType.ERROR, message, component.pos, log, sourceFile);
+  }
+  if (INNER_COMPONENT_NAMES.has(componentName)) {
+    const message: string = `The struct '${componentName}' cannot have the same name ` +
+      `as the built-in component '${componentName}'.`;
     addLog(LogType.ERROR, message, component.pos, log, sourceFile);
   }
 }