diff --git a/include/mbedtls/aes.h b/include/mbedtls/aes.h
index 94e7282..63c0f67 100644
--- a/include/mbedtls/aes.h
+++ b/include/mbedtls/aes.h
@@ -42,7 +42,7 @@
 #define MBEDTLS_AES_H
 
 #if !defined(MBEDTLS_CONFIG_FILE)
-#include "config.h"
+#include "mbedtls/config.h"
 #else
 #include MBEDTLS_CONFIG_FILE
 #endif