diff --git a/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m b/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m
index aac307ad9b427b29017c6483031ac384cdc948c5..a76e45416bf75f5767bf2b4a6cf869f0ef6e7a72 100644
--- a/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m
+++ b/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m
@@ -34,7 +34,6 @@
 #import <XCTest/XCTest.h>
 #import <netinet/in.h>
 #import <sys/socket.h>
-#import <sys/fcntl.h>
 
 #import <Cronet/Cronet.h>
 #import <grpc/grpc.h>
@@ -197,7 +196,6 @@ unsigned int parse_h2_length(const char *field) {
   s_addr.sin_family = AF_INET;
   s_addr.sin_addr.s_addr = htonl(INADDR_ANY);
   s_addr.sin_port = htons(port);
-  GPR_ASSERT(-1 != fcntl(sl, F_SETFL, fcntl(sl, F_GETFL, 0) | O_NONBLOCK));
   GPR_ASSERT(0 == bind(sl, (struct sockaddr *)&s_addr, sizeof(s_addr)));
   GPR_ASSERT(0 == listen(sl, 5));
 
@@ -240,10 +238,6 @@ unsigned int parse_h2_length(const char *field) {
 
   dispatch_async(
       dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
-        fd_set fs;
-        FD_ZERO(&fs);
-        FD_SET(sl, &fs);
-        select(sl + 1, &fs, NULL, NULL, NULL);
         int s = accept(sl, NULL, NULL);
         GPR_ASSERT(s >= 0);
 
@@ -331,17 +325,18 @@ unsigned int parse_h2_length(const char *field) {
   __weak XCTestExpectation *expectation =
       [self expectationWithDescription:@"Coalescing"];
 
+  int sl = socket(AF_INET, SOCK_STREAM, 0);
+  GPR_ASSERT(sl >= 0);
+  struct sockaddr_in s_addr;
+  memset(&s_addr, 0, sizeof(s_addr));
+  s_addr.sin_family = AF_INET;
+  s_addr.sin_addr.s_addr = htonl(INADDR_ANY);
+  s_addr.sin_port = htons(port);
+  GPR_ASSERT(0 == bind(sl, (struct sockaddr *)&s_addr, sizeof(s_addr)));
+  GPR_ASSERT(0 == listen(sl, 5));
+
   dispatch_async(
       dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
-        int sl = socket(AF_INET, SOCK_STREAM, 0);
-        GPR_ASSERT(sl >= 0);
-        struct sockaddr_in s_addr;
-        memset(&s_addr, 0, sizeof(s_addr));
-        s_addr.sin_family = AF_INET;
-        s_addr.sin_addr.s_addr = htonl(INADDR_ANY);
-        s_addr.sin_port = htons(port);
-        GPR_ASSERT(0 == bind(sl, (struct sockaddr *)&s_addr, sizeof(s_addr)));
-        GPR_ASSERT(0 == listen(sl, 5));
         int s = accept(sl, NULL, NULL);
         GPR_ASSERT(s >= 0);
         struct timeval tv;
@@ -396,9 +391,6 @@ unsigned int parse_h2_length(const char *field) {
         [expectation fulfill];
       });
 
-  // Guarantees that server is listening to the port before client connects.
-  sleep(1);
-
   memset(ops, 0, sizeof(ops));
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;