diff --git a/mobile/android/geckoview_library/project.properties b/mobile/android/geckoview_library/project.properties
index 484dab07534..dfa4dd0977f 100644
--- a/mobile/android/geckoview_library/project.properties
+++ b/mobile/android/geckoview_library/project.properties
@@ -11,5 +11,5 @@
#proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
# Project target.
-target=android-17
+target=android-16
android.library=true
diff --git a/mobile/android/tests/background/junit3/AndroidManifest.xml.in b/mobile/android/tests/background/junit3/AndroidManifest.xml.in
index bdd681f45bd..274a2bc3ef1 100644
--- a/mobile/android/tests/background/junit3/AndroidManifest.xml.in
+++ b/mobile/android/tests/background/junit3/AndroidManifest.xml.in
@@ -7,7 +7,7 @@
android:versionName="1.0" >
+ android:targetSdkVersion="16" />