diff --git a/tests/suites/test_suite_ecp.data b/tests/suites/test_suite_ecp.data
index 30d5ec6..2c25cd7 100644
--- a/tests/suites/test_suite_ecp.data
+++ b/tests/suites/test_suite_ecp.data
@@ -336,6 +336,14 @@
 depends_on:MBEDTLS_ECP_DP_CURVE448_ENABLED
 ecp_test_vec_x:MBEDTLS_ECP_DP_CURVE448:"eb7298a5c0d8c29a1dab27f1a6826300917389449741a974f5bac9d98dc298d46555bce8bae89eeed400584bb046cf75579f51d125498f98":"a01fc432e5807f17530d1288da125b0cd453d941726436c8bbd9c5222c3da7fa639ce03db8d23b274a0721a1aed5227de6e3b731ccf7089b":"ad997351b6106f36b0d1091b929c4c37213e0d2b97e85ebb20c127691d0dad8f1d8175b0723745e639a3cb7044290b99e0e2a0c27a6a301c":"0936f37bc6c1bd07ae3dec7ab5dc06a73ca13242fb343efc72b9d82730b445f3d4b0bd077162a46dcfec6f9b590bfcbcf520cdb029a8b73e":"9d874a5137509a449ad5853040241c5236395435c36424fd560b0cb62b281d285275a740ce32a22dd1740f4aa9161cec95ccc61a18f4ff07"
 
+ECP point multiplication rng fail secp256r1
+depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+ecp_test_mul_rng:MBEDTLS_ECP_DP_SECP256R1:"814264145F2F56F2E96A8E337A1284993FAF432A5ABCE59E867B7291D507A3AF"
+
+ECP point multiplication rng fail Curve25519
+depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
+ecp_test_mul_rng:MBEDTLS_ECP_DP_CURVE25519:"5AC99F33632E5A768DE7E81BF854C27C46E3FBF2ABBACD29EC4AFF517369C660"
+
 ECP test vectors secp192k1
 depends_on:MBEDTLS_ECP_DP_SECP192K1_ENABLED
 ecp_test_vect:MBEDTLS_ECP_DP_SECP192K1:"D1E13A359F6E0F0698791938E6D60246030AE4B0D8D4E9DE":"281BCA982F187ED30AD5E088461EBE0A5FADBB682546DF79":"3F68A8E9441FB93A4DD48CB70B504FCC9AA01902EF5BE0F3":"BE97C5D2A1A94D081E3FACE53E65A27108B7467BDF58DE43":"5EB35E922CD693F7947124F5920022C4891C04F6A8B8DCB2":"60ECF73D0FC43E0C42E8E155FFE39F9F0B531F87B34B6C3C":"372F5C5D0E18313C82AEF940EC3AFEE26087A46F1EBAE923":"D5A9F9182EC09CEAEA5F57EA10225EC77FA44174511985FD"
diff --git a/tests/suites/test_suite_ecp.function b/tests/suites/test_suite_ecp.function
index 0b2e029..850b77c 100644
--- a/tests/suites/test_suite_ecp.function
+++ b/tests/suites/test_suite_ecp.function
@@ -675,6 +675,31 @@
 /* END_CASE */
 
 /* BEGIN_CASE */
+void ecp_test_mul_rng( int id, data_t * d_hex)
+{
+    mbedtls_ecp_group grp;
+    mbedtls_mpi d;
+    mbedtls_ecp_point Q;
+
+    mbedtls_ecp_group_init( &grp ); mbedtls_mpi_init( &d );
+    mbedtls_ecp_point_init( &Q );
+
+    TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
+
+    TEST_ASSERT( mbedtls_ecp_check_pubkey( &grp, &grp.G ) == 0 );
+
+    TEST_ASSERT( mbedtls_mpi_read_binary( &d, d_hex->x, d_hex->len ) == 0 );
+
+    TEST_ASSERT( mbedtls_ecp_mul( &grp, &Q, &d, &grp.G, &rnd_zero_rand, NULL )
+                 == MBEDTLS_ERR_ECP_RANDOM_FAILED );
+
+exit:
+    mbedtls_ecp_group_free( &grp ); mbedtls_mpi_free( &d );
+    mbedtls_ecp_point_free( &Q );
+}
+/* END_CASE */
+
+/* BEGIN_CASE */
 void ecp_fast_mod( int id, char * N_str )
 {
     mbedtls_ecp_group grp;