diff --git a/cmds/installd/dexopt.cpp b/cmds/installd/dexopt.cpp
index 9f1cd45..02a6063 100644
--- a/cmds/installd/dexopt.cpp
+++ b/cmds/installd/dexopt.cpp
@@ -1877,9 +1877,8 @@
         const char* dex_metadata_path, const char* compilation_reason) {
     CHECK(pkgname != nullptr);
     CHECK(pkgname[0] != 0);
-    if ((dexopt_flags & ~DEXOPT_MASK) != 0) {
-        LOG_FATAL("dexopt flags contains unknown fields\n");
-    }
+    CHECK_EQ(dexopt_flags & ~DEXOPT_MASK, 0)
+        << "dexopt flags contains unknown fields: " << dexopt_flags;
 
     if (!validate_dex_path_size(dex_path)) {
         return -1;
diff --git a/cmds/installd/installd_constants.h b/cmds/installd/installd_constants.h
index 06c83e4..6282ba2 100644
--- a/cmds/installd/installd_constants.h
+++ b/cmds/installd/installd_constants.h
@@ -64,6 +64,7 @@
     | DEXOPT_FORCE
     | DEXOPT_STORAGE_CE
     | DEXOPT_STORAGE_DE
+    | DEXOPT_IDLE_BACKGROUND_JOB
     | DEXOPT_ENABLE_HIDDEN_API_CHECKS;
 
 // NOTE: keep in sync with StorageManager
diff --git a/cmds/installd/otapreopt.cpp b/cmds/installd/otapreopt.cpp
index d8d5796..20e7e49 100644
--- a/cmds/installd/otapreopt.cpp
+++ b/cmds/installd/otapreopt.cpp
@@ -82,7 +82,8 @@
 static_assert(DEXOPT_ENABLE_HIDDEN_API_CHECKS == 1 << 10,
         "DEXOPT_ENABLE_HIDDEN_API_CHECKS unexpected");
 
-static_assert(DEXOPT_MASK           == 0x5fe, "DEXOPT_MASK unexpected.");
+static_assert(DEXOPT_MASK           == (0x5fe | DEXOPT_IDLE_BACKGROUND_JOB),
+              "DEXOPT_MASK unexpected.");