diff --git a/core/src/main/java/com/bytedance/android/aabresguard/parser/ResourcesMappingParser.java b/core/src/main/java/com/bytedance/android/aabresguard/parser/ResourcesMappingParser.java
index ef3901d..1353201 100644
--- a/core/src/main/java/com/bytedance/android/aabresguard/parser/ResourcesMappingParser.java
+++ b/core/src/main/java/com/bytedance/android/aabresguard/parser/ResourcesMappingParser.java
@@ -16,8 +16,8 @@
  * Email: yangjing.yeoh@bytedance.com
  */
 public class ResourcesMappingParser {
-    private static final Pattern MAP_DIR_PATTERN = Pattern.compile("\\s+(.*)->(.*)");
-    private static final Pattern MAP_RES_PATTERN = Pattern.compile("\\s+(.*):(.*)->(.*)");
+    private static final Pattern MAP_DIR_PATTERN = Pattern.compile("^\\s+(.*)->(.*)");
+    private static final Pattern MAP_RES_PATTERN = Pattern.compile("^\\s+(.*):(.*)->(.*)");
     private final Path mappingPath;
 
     public ResourcesMappingParser(Path mappingPath) {