diff --git a/android/build.gradle b/android/build.gradle
index d2ffbff..bf32cc4 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -6,6 +6,19 @@ allprojects {
 }
 
 rootProject.buildDir = "../build"
+
+subprojects {
+    afterEvaluate { project ->
+        if (project.hasProperty('android')) {
+            project.android {
+                if (namespace == null) {
+                    namespace project.group
+                }
+            }
+        }
+    }
+}
+
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
 }