diff --git a/library/bignum_core.c b/library/bignum_core.c
index 3b660d0..2337ae5 100644
--- a/library/bignum_core.c
+++ b/library/bignum_core.c
@@ -540,6 +540,7 @@
     return( ret );
 }
 
+MBEDTLS_STATIC_TESTABLE
 void mbedtls_mpi_core_ct_uint_table_lookup( mbedtls_mpi_uint *dest,
                                             const mbedtls_mpi_uint *table,
                                             size_t limbs,
diff --git a/library/bignum_core.h b/library/bignum_core.h
index 82da142..ede8161 100644
--- a/library/bignum_core.h
+++ b/library/bignum_core.h
@@ -452,6 +452,7 @@
 int mbedtls_mpi_core_get_mont_r2_unsafe( mbedtls_mpi *X,
                                          const mbedtls_mpi *N );
 
+#if defined(MBEDTLS_TEST_HOOKS)
 /**
  * Copy an MPI from a table without leaking the index.
  *
@@ -469,6 +470,7 @@
                                             size_t limbs,
                                             size_t count,
                                             size_t index );
+#endif /* MBEDTLS_TEST_HOOKS */
 
 /**
  * \brief          Fill an integer with a number of random bytes.
diff --git a/tests/suites/test_suite_bignum_core.function b/tests/suites/test_suite_bignum_core.function
index 612a7c6..4668946 100644
--- a/tests/suites/test_suite_bignum_core.function
+++ b/tests/suites/test_suite_bignum_core.function
@@ -935,7 +935,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE */
+/* BEGIN_CASE depends_on:MBEDTLS_TEST_HOOKS */
 void mpi_core_ct_uint_table_lookup( int bitlen, int window_size )
 {
     size_t limbs = BITS_TO_LIMBS( bitlen );