diff --git a/core/jni/Android.bp b/core/jni/Android.bp
index 4c5453954c62d..7779f55518f0f 100644
--- a/core/jni/Android.bp
+++ b/core/jni/Android.bp
@@ -308,6 +308,7 @@ cc_library_shared {
                 "android_os_MessageQueue.cpp",
                 "android_os_Trace.cpp",
                 "android_util_AssetManager.cpp",
+                "android_util_FileObserver.cpp",
                 "android_util_StringBlock.cpp",
                 "android_util_XmlBlock.cpp",
             ],
diff --git a/core/jni/LayoutlibLoader.cpp b/core/jni/LayoutlibLoader.cpp
index 549fd4db8b765..6c0680fe6707a 100644
--- a/core/jni/LayoutlibLoader.cpp
+++ b/core/jni/LayoutlibLoader.cpp
@@ -70,6 +70,7 @@ extern int register_android_graphics_fonts_Font(JNIEnv* env);
 extern int register_android_graphics_fonts_FontFamily(JNIEnv* env);
 extern int register_android_graphics_text_LineBreaker(JNIEnv* env);
 extern int register_android_graphics_text_MeasuredText(JNIEnv* env);
+extern int register_android_os_FileObserver(JNIEnv* env);
 extern int register_android_os_MessageQueue(JNIEnv* env);
 extern int register_android_os_SystemClock(JNIEnv* env);
 extern int register_android_os_SystemProperties(JNIEnv* env);
@@ -128,6 +129,7 @@ static const std::unordered_map<std::string, RegJNIRec>  gRegJNIMap = {
     {"android.graphics.text.LineBreaker", REG_JNI(register_android_graphics_text_LineBreaker)},
     {"android.graphics.text.MeasuredText", REG_JNI(register_android_graphics_text_MeasuredText)},
 #ifdef __linux__
+    {"android.os.FileObserver", REG_JNI(register_android_os_FileObserver)},
     {"android.os.MessageQueue", REG_JNI(register_android_os_MessageQueue)},
 #endif
     {"android.os.SystemClock", REG_JNI(register_android_os_SystemClock)},