diff --git a/libc-bottom-half/sources/file.c b/libc-bottom-half/sources/file.c
index 886a28de8..bc22e3bc4 100644
--- a/libc-bottom-half/sources/file.c
+++ b/libc-bottom-half/sources/file.c
@@ -123,7 +123,7 @@ static int file_get_read_stream(void *data, wasi_read_t *read) {
 #endif
   read->offset = &file->offset;
   read->timeout = 0;
-  read->blocking = (file->oflag & O_NONBLOCK) == 0;
+  read->blocking = true;
   return 0;
 }
 
@@ -193,7 +193,7 @@ static int file_get_write_stream(void *data, wasi_write_t *write) {
 #endif
   write->offset = &file->offset;
   write->timeout = 0;
-  write->blocking = (file->oflag & O_NONBLOCK) == 0;
+  write->blocking = true;
   return 0;
 }