diff --git a/src/compress.c b/src/compress.c
index 9f65e4fa..6b3b1b95 100644
--- a/src/compress.c
+++ b/src/compress.c
@@ -380,7 +380,7 @@ protected ssize_t
 sread(int fd, void *buf, size_t n, int canbepipe __attribute__((__unused__)))
 {
 	ssize_t rv;
-#ifdef FIONREAD
+#if defined(FIONREAD) && !defined(__MINGW32__)
 	int t = 0;
 #endif
 	size_t rn = n;
@@ -388,7 +388,7 @@ sread(int fd, void *buf, size_t n, int canbepipe __attribute__((__unused__)))
 	if (fd == STDIN_FILENO)
 		goto nocheck;
 
-#ifdef FIONREAD
+#if defined(FIONREAD) && !defined(__MINGW32__)
 	if (canbepipe && (ioctl(fd, FIONREAD, &t) == -1 || t == 0)) {
 #ifdef FD_ZERO
 		ssize_t cnt;