diff --git a/include/grpc/support/time.h b/include/grpc/support/time.h
index 690fbc1..9fb1d0b 100644
--- a/include/grpc/support/time.h
+++ b/include/grpc/support/time.h
@@ -37,28 +37,19 @@
    We use gpr_timespec, which is analogous to struct timespec.  On some
    machines, absolute times may be in local time.  */
 
-/* Platform specific header declares gpr_timespec.
-   gpr_timespec contains:
-      time_t tv_sec;  // seconds since start of 1970
-      int tv_nsec;    // nanoseconds;  always in 0..999999999; never negative.
- */
-
 #include <grpc/support/port_platform.h>
-
-#if defined(GPR_POSIX_TIME)
-#include <grpc/support/time_posix.h>
-#elif defined(GPR_WIN32)
-#include <grpc/support/time_win32.h>
-#else
-#error could not determine platform for time
-#endif
-
 #include <stddef.h>
+#include <time.h>
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+typedef struct gpr_timespec {
+    time_t tv_sec;
+    int tv_nsec;
+} gpr_timespec;
+
 /* Time constants. */
 extern const gpr_timespec gpr_time_0;     /* The zero time interval. */
 extern const gpr_timespec gpr_inf_future; /* The far future */
diff --git a/include/grpc/support/time_posix.h b/include/grpc/support/time_posix.h
deleted file mode 100644
index 85dee5f..0000000
--- a/include/grpc/support/time_posix.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- *
- * Copyright 2014, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#ifndef __GRPC_SUPPORT_TIME_POSIX_H__
-#define __GRPC_SUPPORT_TIME_POSIX_H__
-/* Posix variant of gpr_time_platform.h */
-
-#include <sys/time.h>
-#include <time.h>
-
-typedef struct gpr_timespec {
-    time_t tv_sec;
-    long tv_nsec;
-} gpr_timespec;
-
-#endif /* __GRPC_SUPPORT_TIME_POSIX_H__ */
diff --git a/include/grpc/support/time_win32.h b/include/grpc/support/time_win32.h
deleted file mode 100644
index e62ad64..0000000
--- a/include/grpc/support/time_win32.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- *
- * Copyright 2014, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#ifndef __GRPC_SUPPORT_TIME_WIN32_H__
-#define __GRPC_SUPPORT_TIME_WIN32_H__
-/* Win32 variant of gpr_time_platform.h */
-
-#include <Winsock.h>
-#include <time.h>
-
-typedef struct gpr_timespec {
-  time_t tv_sec;
-  long tv_nsec;
-} gpr_timespec;
-
-#endif /* __GRPC_SUPPORT_TIME_WIN32_H__ */