diff --git a/modules/java/android_sdk/android_gradle_lib/build.gradle b/modules/java/android_sdk/android_gradle_lib/build.gradle
index 41cdb9e5e1..b887cdb4b9 100644
--- a/modules/java/android_sdk/android_gradle_lib/build.gradle
+++ b/modules/java/android_sdk/android_gradle_lib/build.gradle
@@ -5,6 +5,7 @@ def openCVersionName = "@OPENCV_VERSION@"
 def openCVersionCode = ((@OPENCV_VERSION_MAJOR@ * 100 + @OPENCV_VERSION_MINOR@) * 100 + @OPENCV_VERSION_PATCH@) * 10 + 0
 
 android {
+    @OPENCV_ANDROID_NAMESPACE_DECLARATION@
     compileSdkVersion @ANDROID_COMPILE_SDK_VERSION@
 
     defaultConfig {