diff --git a/acb_mat/test/t-mul_threaded.c b/acb_mat/test/t-mul_threaded.c
index 3ed1e4db..c3067143 100644
--- a/acb_mat/test/t-mul_threaded.c
+++ b/acb_mat/test/t-mul_threaded.c
@@ -22,7 +22,7 @@ int main()
 
     flint_randinit(state);
 
-    for (iter = 0; iter < 5000 * arb_test_multiplier(); iter++)
+    for (iter = 0; iter < 1000 * arb_test_multiplier(); iter++)
     {
         slong m, n, k, qbits1, qbits2, rbits1, rbits2, rbits3;
         fmpq_mat_t A, B, C;
@@ -111,7 +111,7 @@ int main()
     }
 
     flint_randclear(state);
-    flint_cleanup();
+    flint_cleanup_master();
     flint_printf("PASS\n");
     return EXIT_SUCCESS;
 }
diff --git a/arb_mat/test/t-mul_threaded.c b/arb_mat/test/t-mul_threaded.c
index f8653225..69fac102 100644
--- a/arb_mat/test/t-mul_threaded.c
+++ b/arb_mat/test/t-mul_threaded.c
@@ -22,7 +22,7 @@ int main()
 
     flint_randinit(state);
 
-    for (iter = 0; iter < 10000 * arb_test_multiplier(); iter++)
+    for (iter = 0; iter < 1000 * arb_test_multiplier(); iter++)
     {
         slong m, n, k, qbits1, qbits2, rbits1, rbits2, rbits3;
         fmpq_mat_t A, B, C;
@@ -111,7 +111,7 @@ int main()
     }
 
     flint_randclear(state);
-    flint_cleanup();
+    flint_cleanup_master();
     flint_printf("PASS\n");
     return EXIT_SUCCESS;
 }