diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 7ea2a1a..73f5a6e 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -344,7 +344,7 @@
         case MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE:
             return( PSA_ERROR_BUFFER_TOO_SMALL );
         case MBEDTLS_ERR_RSA_RNG_FAILED:
-            return( PSA_ERROR_INSUFFICIENT_MEMORY );
+            return( PSA_ERROR_INSUFFICIENT_ENTROPY );
         case MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION:
             return( PSA_ERROR_NOT_SUPPORTED );
         case MBEDTLS_ERR_RSA_HW_ACCEL_FAILED:
@@ -372,8 +372,11 @@
             return( PSA_ERROR_INVALID_SIGNATURE );
         case MBEDTLS_ERR_ECP_ALLOC_FAILED:
             return( PSA_ERROR_INSUFFICIENT_MEMORY );
+        case MBEDTLS_ERR_ECP_RANDOM_FAILED:
+            return( PSA_ERROR_INSUFFICIENT_ENTROPY );
         case MBEDTLS_ERR_ECP_HW_ACCEL_FAILED:
             return( PSA_ERROR_HARDWARE_FAILURE );
+
         case MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED:
             return( PSA_ERROR_CORRUPTION_DETECTED );