diff --git a/library/pkwrite.c b/library/pkwrite.c
index 5f801e2..4ec0b81 100644
--- a/library/pkwrite.c
+++ b/library/pkwrite.c
@@ -53,7 +53,7 @@
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
 #include "psa/crypto.h"
-#include "mbedtls/psa_util.h"
+#include "psa_util_internal.h"
 #endif
 #include "mbedtls/platform.h"