diff --git a/3rd-party/micro-ecc/btstack_config_uECC.h b/3rd-party/micro-ecc/btstack_config_uECC.h
index a50873f17..0c99c20ba 100644
--- a/3rd-party/micro-ecc/btstack_config_uECC.h
+++ b/3rd-party/micro-ecc/btstack_config_uECC.h
@@ -1,6 +1,11 @@
 // Configuration of micro-ecc for use with BTstack
 //
 // We only need/use SECP256R1 for LE Secure Connections
+
+
+#ifndef BTSATCK_CONFIG_UECC_H__
+#define BTSATCK_CONFIG_UECC_H__
+
 #define uECC_CURVE uECC_secp256r1
 
 // optimization: size vs. speed: uECC_asm_none - uECC_asm_small - uECC_asm_fast
@@ -12,3 +17,5 @@
 #ifndef uECC_SQUARE_FUNC
 #define uECC_SQUARE_FUNC 0
 #endif
+
+#endif
diff --git a/3rd-party/micro-ecc/uECC.h b/3rd-party/micro-ecc/uECC.h
index 2eb4edb14..91cb9fadf 100644
--- a/3rd-party/micro-ecc/uECC.h
+++ b/3rd-party/micro-ecc/uECC.h
@@ -1,7 +1,7 @@
 /* Copyright 2014, Kenneth MacKay. Licensed under the BSD 2-clause license. */
 
-#ifndef _MICRO_ECC_H_
-#define _MICRO_ECC_H_
+#ifndef MICRO_ECC_H_
+#define MICRO_ECC_H_
 
 // BK
 #include "btstack_config_uECC.h"