diff --git a/programs/fuzz/fuzz_dtlsserver.c b/programs/fuzz/fuzz_dtlsserver.c
index 4cde1fe6c..48553c0c8 100644
--- a/programs/fuzz/fuzz_dtlsserver.c
+++ b/programs/fuzz/fuzz_dtlsserver.c
@@ -10,11 +10,12 @@
 #include "mbedtls/timing.h"
 #include "mbedtls/ssl_cookie.h"
 
-
 #if defined(MBEDTLS_SSL_SRV_C) && \
     defined(MBEDTLS_ENTROPY_C) && \
     defined(MBEDTLS_CTR_DRBG_C) && \
-    defined(MBEDTLS_TIMING_C)
+    defined(MBEDTLS_TIMING_C) && \
+    ( defined(MBEDTLS_SHA256_C) || \
+        ( defined(MBEDTLS_SHA512_C) && !defined(MBEDTLS_SHA512_NO_SHA384) ) )
 const char *pers = "fuzz_dtlsserver";
 const unsigned char client_ip[4] = {0x7F, 0, 0, 1};
 static int initialized = 0;
@@ -30,7 +31,9 @@ int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
     defined(MBEDTLS_SSL_SRV_C) && \
     defined(MBEDTLS_ENTROPY_C) && \
     defined(MBEDTLS_CTR_DRBG_C) && \
-    defined(MBEDTLS_TIMING_C)
+    defined(MBEDTLS_TIMING_C) && \
+    ( defined(MBEDTLS_SHA256_C) || \
+        ( defined(MBEDTLS_SHA512_C) && !defined(MBEDTLS_SHA512_NO_SHA384) ) )
     int ret;
     size_t len;
     mbedtls_ssl_context ssl;
diff --git a/tests/suites/test_suite_psa_crypto_se_driver_hal.function b/tests/suites/test_suite_psa_crypto_se_driver_hal.function
index 79d658fd0..c96b98845 100644
--- a/tests/suites/test_suite_psa_crypto_se_driver_hal.function
+++ b/tests/suites/test_suite_psa_crypto_se_driver_hal.function
@@ -664,8 +664,10 @@ static int smoke_test_key( mbedtls_svc_key_id_t key )
     psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
     psa_mac_operation_t mac_operation = PSA_MAC_OPERATION_INIT;
     psa_cipher_operation_t cipher_operation = PSA_CIPHER_OPERATION_INIT;
+#if defined(MBEDTLS_SHA256_C)
     psa_key_derivation_operation_t derivation_operation =
         PSA_KEY_DERIVATION_OPERATION_INIT;
+#endif
     uint8_t buffer[80]; /* large enough for a public key for ECDH */
     size_t length;
     mbedtls_svc_key_id_t key2 = MBEDTLS_SVC_KEY_ID_INIT;