diff --git a/test/core/util/passthru_endpoint.c b/test/core/util/passthru_endpoint.c
index ad718c75d1f..6400845d235 100644
--- a/test/core/util/passthru_endpoint.c
+++ b/test/core/util/passthru_endpoint.c
@@ -108,7 +108,8 @@ static void me_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
     m->on_read = NULL;
   } else {
     for (size_t i = 0; i < slices->count; i++) {
-      grpc_slice_buffer_add(&m->read_buffer, grpc_slice_copy(slices->slices[i]));
+      grpc_slice_buffer_add(&m->read_buffer,
+                            grpc_slice_copy(slices->slices[i]));
     }
   }
   gpr_mu_unlock(&m->parent->mu);
diff --git a/test/core/util/trickle_endpoint.c b/test/core/util/trickle_endpoint.c
index 66f30c8e65d..58ac59711be 100644
--- a/test/core/util/trickle_endpoint.c
+++ b/test/core/util/trickle_endpoint.c
@@ -71,7 +71,8 @@ static void te_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
     te->last_write = gpr_now(GPR_CLOCK_MONOTONIC);
   }
   for (size_t i = 0; i < slices->count; i++) {
-    grpc_slice_buffer_add(&te->write_buffer, grpc_slice_copy(slices->slices[i]));
+    grpc_slice_buffer_add(&te->write_buffer,
+                          grpc_slice_copy(slices->slices[i]));
   }
   grpc_closure_sched(exec_ctx, cb, GRPC_ERROR_REF(te->error));
   gpr_mu_unlock(&te->mu);