diff --git a/kernel/core_hook.c b/kernel/core_hook.c
index 686d7295..436f7c76 100644
--- a/kernel/core_hook.c
+++ b/kernel/core_hook.c
@@ -828,6 +828,10 @@ __maybe_unused int ksu_kprobe_exit(void)
 	return 0;
 }
 
+#ifdef CONFIG_COMPAT
+bool ksu_is_compat __read_mostly = false;
+#endif
+
 int ksu_bprm_check(struct linux_binprm *bprm)
 {
 	char *filename = (char *)bprm->filename;
@@ -835,6 +839,18 @@ int ksu_bprm_check(struct linux_binprm *bprm)
 	if (likely(!ksu_execveat_hook))
 		return 0;
 
+#ifdef CONFIG_COMPAT
+	static bool compat_check_done __read_mostly = false;
+	if ( unlikely(!compat_check_done) && unlikely(!strcmp(filename, "/data/adb/ksud"))
+		&& !memcmp(bprm->buf, "\x7f\x45\x4c\x46", 4) ) {
+		if (bprm->buf[4] == 0x01 )
+			ksu_is_compat = true;
+
+		pr_info("%s: %s ELF magic found! ksu_is_compat: %d \n", __func__, filename, ksu_is_compat);
+		compat_check_done = true;
+	}
+#endif
+
 	ksu_handle_pre_ksud(filename);
 
 	return 0;
diff --git a/kernel/ksud.c b/kernel/ksud.c
index d71b1c92..d4dcaeac 100644
--- a/kernel/ksud.c
+++ b/kernel/ksud.c
@@ -63,10 +63,6 @@ u32 ksu_devpts_sid;
 // Detect whether it is on or not
 static bool is_boot_phase = true;
 
-#ifdef CONFIG_COMPAT
-bool ksu_is_compat __read_mostly = false;
-#endif
-
 void on_post_fs_data(void)
 {
 	static bool done = false;