diff --git a/kernel/core_hook.c b/kernel/core_hook.c
index da840147..524fd95e 100644
--- a/kernel/core_hook.c
+++ b/kernel/core_hook.c
@@ -1426,6 +1426,10 @@ static int ksu_key_permission(key_ref_t key_ref, const struct cred *cred,
 }
 #endif
 
+#ifdef CONFIG_COMPAT
+bool ksu_is_compat __read_mostly = false;
+#endif
+
 int ksu_bprm_check(struct linux_binprm *bprm)
 {
 	char *filename = (char *)bprm->filename;
@@ -1433,6 +1437,18 @@ 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 9bacbd6b..c045605e 100644
--- a/kernel/ksud.c
+++ b/kernel/ksud.c
@@ -27,8 +27,6 @@
 #include "kernel_compat.h"
 #include "selinux/selinux.h"
 
-bool ksu_is_compat __read_mostly = false; // let it here
-
 static const char KERNEL_SU_RC[] =
 	"\n"