diff --git a/EmbeddedPkg/Include/libfdt_env.h b/EmbeddedPkg/Include/libfdt_env.h
index 11a97647333e..7feff52bc0fb 100644
--- a/EmbeddedPkg/Include/libfdt_env.h
+++ b/EmbeddedPkg/Include/libfdt_env.h
@@ -76,4 +76,8 @@ static inline size_t strnlen (const char* str, size_t strsz ) {
   return AsciiStrnLenS (str, strsz);
 }
 
+static inline size_t strncmp (const char* str1, const char* str2, size_t strsz ) {
+  return AsciiStrnCmp (str1, str2, strsz);
+}
+
 #endif /* _LIBFDT_ENV_H */