diff --git a/library/psa_crypto_ffdh.c b/library/psa_crypto_ffdh.c
index a65ef46..d8a208f 100644
--- a/library/psa_crypto_ffdh.c
+++ b/library/psa_crypto_ffdh.c
@@ -27,6 +27,7 @@
 #include "psa_crypto_ffdh.h"
 #include "psa_crypto_random_impl.h"
 #include "mbedtls/platform.h"
+#include "mbedtls/error.h"
 
 #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR_LEGACY) ||   \
     defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_PUBLIC_KEY) || \
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 325bb09..a16198f 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -24,6 +24,8 @@
 
 #include "mbedtls/build_info.h"
 
+#include "mbedtls/error.h"
+
 #include "mbedtls/ssl.h"
 #include "mbedtls/cipher.h"
 
diff --git a/library/ssl_tls13_server.c b/library/ssl_tls13_server.c
index ba64c32..df2bd34 100644
--- a/library/ssl_tls13_server.c
+++ b/library/ssl_tls13_server.c
@@ -25,6 +25,7 @@
 #include "mbedtls/error.h"
 #include "mbedtls/platform.h"
 #include "mbedtls/constant_time.h"
+#include "mbedtls/oid.h"
 #include "md_psa.h"
 
 #include "ssl_misc.h"