diff --git a/ext/opcache/config.m4 b/ext/opcache/config.m4
index 88468b13554..b2d733a1e3f 100644
--- a/ext/opcache/config.m4
+++ b/ext/opcache/config.m4
@@ -26,6 +26,8 @@ if test "$PHP_OPCACHE" != "no"; then
     AC_DEFINE(HAVE_MPROTECT, 1, [Define if you have mprotect() function])
   ])
 
+  AC_CHECK_HEADERS([unistd.h sys/uio.h])
+
   AC_MSG_CHECKING(for sysvipc shared memory support)
   AC_TRY_RUN([
 #include <sys/types.h>
diff --git a/ext/opcache/zend_file_cache.c b/ext/opcache/zend_file_cache.c
index 3054e57a6f5..ab450b0fe97 100644
--- a/ext/opcache/zend_file_cache.c
+++ b/ext/opcache/zend_file_cache.c
@@ -706,7 +706,7 @@ int zend_file_cache_script_store(zend_persistent_script *script, int in_shm)
 	int fd;
 	char *filename;
 	zend_file_cache_metainfo info;
-#ifndef ZEND_WIN32
+#ifdef HAVE_SYS_UIO_H
 	struct iovec vec[3];
 #endif
 	void *mem, *buf;
@@ -761,7 +761,7 @@ int zend_file_cache_script_store(zend_persistent_script *script, int in_shm)
 	info.checksum = zend_adler32(ADLER32_INIT, buf, script->size);
 	info.checksum = zend_adler32(info.checksum, (signed char*)ZSTR_VAL((zend_string*)ZCG(mem)), info.str_size);
 
-#ifndef ZEND_WIN32
+#ifdef HAVE_SYS_UIO_H
 	vec[0].iov_base = &info;
 	vec[0].iov_len = sizeof(info);
 	vec[1].iov_base = buf;