diff --git a/src/drivers/intel/fsp2_0/include/fsp/soc_binding.h b/src/drivers/intel/fsp2_0/include/fsp/soc_binding.h
index 1ff843529c..5c8b441f1b 100644
--- a/src/drivers/intel/fsp2_0/include/fsp/soc_binding.h
+++ b/src/drivers/intel/fsp2_0/include/fsp/soc_binding.h
@@ -16,6 +16,8 @@
 #ifndef _FSP2_0_SOC_BINDING_H_
 #define _FSP2_0_SOC_BINDING_H_
 
+#include <stddef.h>
+
 #pragma pack(push)
 /*
  * This file is a implementation specific header. i.e. different