diff --git a/tools/layoutlib/Android.mk b/tools/layoutlib/Android.mk
index cb68340b3f5ec..08486e6434315 100644
--- a/tools/layoutlib/Android.mk
+++ b/tools/layoutlib/Android.mk
@@ -16,6 +16,8 @@
 LOCAL_PATH := $(my-dir)
 include $(CLEAR_VARS)
 
+LOCAL_JAVACFLAGS := -source 6 -target 6
+
 #
 # Define rules to build temp_layoutlib.jar, which contains a subset of
 # the classes in framework.jar.  The layoutlib_create tool is used to
diff --git a/tools/layoutlib/bridge/Android.mk b/tools/layoutlib/bridge/Android.mk
index e3d48fca5eb23..cfd597e4011da 100644
--- a/tools/layoutlib/bridge/Android.mk
+++ b/tools/layoutlib/bridge/Android.mk
@@ -18,6 +18,7 @@ include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES := $(call all-java-files-under,src)
 LOCAL_JAVA_RESOURCE_DIRS := resources
+LOCAL_JAVACFLAGS := -source 6 -target 6
 
 
 LOCAL_JAVA_LIBRARIES := \