diff --git a/dtbhtool/Android.mk b/dtbhtool/Android.mk
index d2d346d..d4bad52 100644
--- a/dtbhtool/Android.mk
+++ b/dtbhtool/Android.mk
@@ -7,7 +7,6 @@
 LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/libdtbimg
 
 LOCAL_MODULE := libdtbimg
-LOCAL_MODULE_TAGS := optional
 
 include $(BUILD_HOST_STATIC_LIBRARY)
 
@@ -17,14 +16,12 @@
 LOCAL_STATIC_LIBRARIES := libdtbimg libfdt libmincrypt
 
 LOCAL_MODULE := mkdtbhbootimg
-LOCAL_MODULE_TAGS := optional
 
 include $(BUILD_HOST_EXECUTABLE)
 
 include $(CLEAR_VARS)
 LOCAL_SRC_FILES := unpackbootimg.c
 LOCAL_MODULE := unpackdtbhbootimg
-LOCAL_MODULE_TAGS := optional
 include $(BUILD_HOST_EXECUTABLE)
 
 include $(CLEAR_VARS)
@@ -33,7 +30,6 @@
 LOCAL_STATIC_LIBRARIES := libdtbimg libfdt
 
 LOCAL_MODULE := dtbhtoolExynos
-LOCAL_MODULE_TAGS := optional
 
 include $(BUILD_HOST_EXECUTABLE)
 
@@ -41,7 +37,7 @@
 LOCAL_SRC_FILES := mkbootimg.c
 LOCAL_STATIC_LIBRARIES := libdtbimg libfdt libmincrypt libcutils libc
 LOCAL_MODULE := utility_mkdtbhbootimg
-LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE_TAGS := eng
 LOCAL_MODULE_STEM := mkdtbhbootimg
 LOCAL_MODULE_CLASS := UTILITY_EXECUTABLES
 LOCAL_UNSTRIPPED_PATH := $(PRODUCT_OUT)/symbols/utilities
@@ -53,7 +49,7 @@
 LOCAL_SRC_FILES := unpackbootimg.c
 LOCAL_STATIC_LIBRARIES := libcutils libc
 LOCAL_MODULE := utility_unpackdtbhbootimg
-LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE_TAGS := eng
 LOCAL_MODULE_STEM := unpackdtbhbootimg
 LOCAL_MODULE_CLASS := UTILITY_EXECUTABLES
 LOCAL_UNSTRIPPED_PATH := $(PRODUCT_OUT)/symbols/utilities
diff --git a/dtbhtool/libfdt/Android.mk b/dtbhtool/libfdt/Android.mk
index 7c19a05..8c62034 100644
--- a/dtbhtool/libfdt/Android.mk
+++ b/dtbhtool/libfdt/Android.mk
@@ -10,7 +10,6 @@
     fdt_wip.c
 
 LOCAL_MODULE := libfdt
-LOCAL_MODULE_TAGS := optional
 
 include $(BUILD_HOST_STATIC_LIBRARY)
 
@@ -24,6 +23,5 @@
     fdt_wip.c
 
 LOCAL_MODULE := libfdt
-LOCAL_MODULE_TAGS := optional
 
-include $(BUILD_STATIC_LIBRARY)
+include $(BUILD_STATIC_LIBRARY)
\ No newline at end of file