diff --git a/adb/Android.mk b/adb/Android.mk
index 1613a88..425bf9b 100644
--- a/adb/Android.mk
+++ b/adb/Android.mk
@@ -232,12 +232,11 @@
     -D_GNU_SOURCE \
     -Wno-deprecated-declarations \
 
-ifneq (,$(filter userdebug eng,$(TARGET_BUILD_VARIANT)))
-LOCAL_CFLAGS += -DALLOW_ADBD_ROOT=1
-endif
+LOCAL_CFLAGS += -DALLOW_ADBD_NO_AUTH=$(if $(filter userdebug eng,$(TARGET_BUILD_VARIANT)),1,0)
 
 ifneq (,$(filter userdebug eng,$(TARGET_BUILD_VARIANT)))
 LOCAL_CFLAGS += -DALLOW_ADBD_DISABLE_VERITY=1
+LOCAL_CFLAGS += -DALLOW_ADBD_ROOT=1
 endif
 
 LOCAL_MODULE := adbd
diff --git a/adb/adb.cpp b/adb/adb.cpp
index 8a7b9c9..f64b19f 100644
--- a/adb/adb.cpp
+++ b/adb/adb.cpp
@@ -421,9 +421,9 @@
 
         parse_banner(reinterpret_cast<const char*>(p->data), t);
 
-        if (HOST || !auth_enabled) {
+        if (HOST || !auth_required) {
             handle_online(t);
-            if(!HOST) send_connect(t);
+            if (!HOST) send_connect(t);
         } else {
             send_auth_request(t);
         }
diff --git a/adb/adb_auth.cpp b/adb/adb_auth.cpp
index dc01825..cff26d6 100644
--- a/adb/adb_auth.cpp
+++ b/adb/adb_auth.cpp
@@ -28,7 +28,7 @@
 #include "adb.h"
 #include "transport.h"
 
-int auth_enabled = 0;
+bool auth_required = true;
 
 void send_auth_request(atransport *t)
 {
diff --git a/adb/adb_auth.h b/adb/adb_auth.h
index 1e1978d..a13604a 100644
--- a/adb/adb_auth.h
+++ b/adb/adb_auth.h
@@ -19,7 +19,7 @@
 
 #include "adb.h"
 
-extern int auth_enabled;
+extern bool auth_required;
 
 int adb_auth_keygen(const char* filename);
 void adb_auth_verified(atransport *t);
diff --git a/adb/adb_main.cpp b/adb/adb_main.cpp
index 3f88d13..45a2158 100644
--- a/adb/adb_main.cpp
+++ b/adb/adb_main.cpp
@@ -239,10 +239,11 @@
     // descriptor will always be open.
     adbd_cloexec_auth_socket();
 
-    property_get("ro.adb.secure", value, "0");
-    auth_enabled = !strcmp(value, "1");
-    if (auth_enabled)
-        adbd_auth_init();
+    if (ALLOW_ADBD_NO_AUTH && property_get_bool("ro.adb.secure", 0) == 0) {
+        auth_required = false;
+    }
+
+    adbd_auth_init();
 
     // Our external storage path may be different than apps, since
     // we aren't able to bind mount after dropping root.