diff --git a/test/benchmark-pump.c b/test/benchmark-pump.c
index 0269fa71..d0b09301 100644
--- a/test/benchmark-pump.c
+++ b/test/benchmark-pump.c
@@ -273,10 +273,12 @@ static void connection_cb(uv_stream_t* s, int status) {
 
   if (type == TCP) {
     stream = (uv_stream_t*)malloc(sizeof(uv_tcp_t));
-    uv_tcp_init(loop, (uv_tcp_t*)stream);
+    r = uv_tcp_init(loop, (uv_tcp_t*)stream);
+    ASSERT(r == 0);
   } else {
     stream = (uv_stream_t*)malloc(sizeof(uv_pipe_t));
-    uv_pipe_init(loop, (uv_pipe_t*)stream);
+    r = uv_pipe_init(loop, (uv_pipe_t*)stream);
+    ASSERT(r == 0);
   }
 
   r = uv_accept(s, stream);
diff --git a/test/dns-server.c b/test/dns-server.c
index cad5f722..086b52d1 100644
--- a/test/dns-server.c
+++ b/test/dns-server.c
@@ -272,7 +272,8 @@ static void on_connection(uv_stream_t* server, int status) {
   handle->state.prevbuf_pos = 0;
   handle->state.prevbuf_rem = 0;
 
-  uv_tcp_init(loop, (uv_tcp_t*)handle);
+  r = uv_tcp_init(loop, (uv_tcp_t*)handle);
+  ASSERT(r == 0);
 
   r = uv_accept(server, (uv_stream_t*)handle);
   ASSERT(r == 0);
diff --git a/test/echo-server.c b/test/echo-server.c
index 96e606bd..453ada66 100644
--- a/test/echo-server.c
+++ b/test/echo-server.c
@@ -144,13 +144,15 @@ static void on_connection(uv_stream_t* server, int status) {
   case TCP:
     stream = malloc(sizeof(uv_tcp_t));
     ASSERT(stream != NULL);
-    uv_tcp_init(loop, (uv_tcp_t*)stream);
+    r = uv_tcp_init(loop, (uv_tcp_t*)stream);
+    ASSERT(r == 0);
     break;
 
   case PIPE:
     stream = malloc(sizeof(uv_pipe_t));
     ASSERT(stream != NULL);
-    uv_pipe_init(loop, (uv_pipe_t*)stream);
+    r = uv_pipe_init(loop, (uv_pipe_t*)stream);
+    ASSERT(r == 0);
     break;
 
   default:
diff --git a/test/test-connection-fail.c b/test/test-connection-fail.c
index a5d6b1fd..2762aa28 100644
--- a/test/test-connection-fail.c
+++ b/test/test-connection-fail.c
@@ -134,7 +134,10 @@ TEST_IMPL(connection_fail) {
  * attempt.
  */
 TEST_IMPL(connection_fail_doesnt_auto_close) {
-  uv_timer_init(uv_default_loop(), &timer);
+  int r;
+
+  r = uv_timer_init(uv_default_loop(), &timer);
+  ASSERT(r == 0);
 
   connection_fail(on_connect_without_close);
 
diff --git a/test/test-delayed-accept.c b/test/test-delayed-accept.c
index 36c1dcf2..78531f68 100644
--- a/test/test-delayed-accept.c
+++ b/test/test-delayed-accept.c
@@ -57,7 +57,8 @@ static void do_accept(uv_timer_t* timer_handle, int status) {
   ASSERT(status == 0);
   ASSERT(accepted_handle != NULL);
 
-  uv_tcp_init(uv_default_loop(), accepted_handle);
+  r = uv_tcp_init(uv_default_loop(), accepted_handle);
+  ASSERT(r == 0);
 
   /* Test to that uv_default_loop()->counters.tcp_init does not increase across the uv_accept. */
   tcpcnt = uv_default_loop()->counters.tcp_init;
diff --git a/test/test-getsockname.c b/test/test-getsockname.c
index 1f46ec3e..5dac88b7 100644
--- a/test/test-getsockname.c
+++ b/test/test-getsockname.c
@@ -117,7 +117,8 @@ static void on_connection(uv_stream_t* server, int status) {
   handle = (uv_handle_t*) malloc(sizeof(uv_tcp_t));
   ASSERT(handle != NULL);
 
-  uv_tcp_init(loop, (uv_tcp_t*)handle);
+  r = uv_tcp_init(loop, (uv_tcp_t*)handle);
+  ASSERT(r == 0);
 
   /* associate server with stream */
   handle->data = server;
diff --git a/test/test-shutdown-eof.c b/test/test-shutdown-eof.c
index d4ad085e..9d4f2cce 100644
--- a/test/test-shutdown-eof.c
+++ b/test/test-shutdown-eof.c
@@ -156,7 +156,9 @@ TEST_IMPL(shutdown_eof) {
   qbuf.base = "Q";
   qbuf.len = 1;
 
-  uv_timer_init(uv_default_loop(), &timer);
+  r = uv_timer_init(uv_default_loop(), &timer);
+  ASSERT(r == 0);
+
   uv_timer_start(&timer, timer_cb, 100, 0);
 
   server_addr = uv_ip4_addr("127.0.0.1", TEST_PORT);