diff --git a/include/mbedtls/config_psa.h b/include/mbedtls/config_psa.h
index 02bdfb1..87c092a 100644
--- a/include/mbedtls/config_psa.h
+++ b/include/mbedtls/config_psa.h
@@ -49,7 +49,7 @@
 
 #if defined(PSA_WANT_ALG_ECDSA_DETERMINISTIC)
 #if !defined(MBEDTLS_PSA_ACCEL_ALG_ECDSA_DETERMINISTIC)
-#define MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA     1
+#define MBEDTLS_PSA_BUILTIN_ALG_ECDSA_DETERMINISTIC     1
 #define MBEDTLS_ECDSA_DETERMINISTIC
 #endif /* MBEDTLS_PSA_ACCEL_ALG_ECDSA_DETERMINISTIC */
 #endif /* PSA_WANT_ALG_DETERMINISTIC_ECDSA */