diff --git a/include/mbedtls/sha512.h b/include/mbedtls/sha512.h
index c06ceed..48923e5 100644
--- a/include/mbedtls/sha512.h
+++ b/include/mbedtls/sha512.h
@@ -27,7 +27,7 @@
 #define MBEDTLS_SHA512_H
 
 #if !defined(MBEDTLS_CONFIG_FILE)
-#include "config.h"
+#include "mbedtls/config.h"
 #else
 #include MBEDTLS_CONFIG_FILE
 #endif