diff --git a/include/mbedtls/hmac_drbg.h b/include/mbedtls/hmac_drbg.h
index f1289cb..46536a1 100644
--- a/include/mbedtls/hmac_drbg.h
+++ b/include/mbedtls/hmac_drbg.h
@@ -25,15 +25,15 @@
 #define MBEDTLS_HMAC_DRBG_H
 
 #if !defined(MBEDTLS_CONFIG_FILE)
-#include "config.h"
+#include "mbedtls/config.h"
 #else
 #include MBEDTLS_CONFIG_FILE
 #endif
 
-#include "md.h"
+#include "mbedtls/md.h"
 
 #if defined(MBEDTLS_THREADING_C)
-#include "threading.h"
+#include "mbedtls/threading.h"
 #endif
 
 /*