diff --git a/tests/src/bignum_helpers.c b/tests/src/bignum_helpers.c
index efb2eca..214530d 100644
--- a/tests/src/bignum_helpers.c
+++ b/tests/src/bignum_helpers.c
@@ -86,6 +86,7 @@
     return MBEDTLS_ERR_MPI_BAD_INPUT_DATA;
 }
 
+#if defined(MBEDTLS_ECP_WITH_MPI_UINT)
 int mbedtls_test_read_mpi_modulus(mbedtls_mpi_mod_modulus *N,
                                   const char *s,
                                   mbedtls_mpi_mod_rep_selector int_rep)
@@ -122,6 +123,7 @@
     mbedtls_free((mbedtls_mpi_uint *) N->p);
     mbedtls_mpi_mod_modulus_free(N);
 }
+#endif /* MBEDTLS_ECP_WITH_MPI_UINT */
 
 int mbedtls_test_read_mpi(mbedtls_mpi *X, const char *s)
 {
diff --git a/tests/suites/test_suite_bignum_mod.function b/tests/suites/test_suite_bignum_mod.function
index eaf2bd5..9d0fe93 100644
--- a/tests/suites/test_suite_bignum_mod.function
+++ b/tests/suites/test_suite_bignum_mod.function
@@ -35,7 +35,7 @@
 /* END_HEADER */
 
 /* BEGIN_DEPENDENCIES
- * depends_on:MBEDTLS_BIGNUM_C
+ * depends_on:MBEDTLS_BIGNUM_C:MBEDTLS_ECP_WITH_MPI_UINT
  * END_DEPENDENCIES
  */
 
diff --git a/tests/suites/test_suite_bignum_mod_raw.function b/tests/suites/test_suite_bignum_mod_raw.function
index 6b953f5..f7f8a59 100644
--- a/tests/suites/test_suite_bignum_mod_raw.function
+++ b/tests/suites/test_suite_bignum_mod_raw.function
@@ -11,7 +11,7 @@
 /* END_HEADER */
 
 /* BEGIN_DEPENDENCIES
- * depends_on:MBEDTLS_BIGNUM_C
+ * depends_on:MBEDTLS_BIGNUM_C:MBEDTLS_ECP_WITH_MPI_UINT
  * END_DEPENDENCIES
  */
 
diff --git a/tests/suites/test_suite_bignum_random.function b/tests/suites/test_suite_bignum_random.function
index 6e533bc..b43b1e7 100644
--- a/tests/suites/test_suite_bignum_random.function
+++ b/tests/suites/test_suite_bignum_random.function
@@ -192,7 +192,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE */
+/* BEGIN_CASE depends_on:MBEDTLS_ECP_WITH_MPI_UINT */
 void mpi_mod_random_values(int min, char *max_hex, int rep)
 {
     /* Same RNG as in mpi_core_random_basic */
@@ -403,7 +403,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE */
+/* BEGIN_CASE depends_on:MBEDTLS_ECP_WITH_MPI_UINT */
 void mpi_mod_random_validation(int min, char *bound_hex,
                                int result_limbs_delta,
                                int expected_ret)