diff --git a/pgxn/neon/file_cache.c b/pgxn/neon/file_cache.c
index f708adb1df..9a988c4c15 100644
--- a/pgxn/neon/file_cache.c
+++ b/pgxn/neon/file_cache.c
@@ -1455,7 +1455,7 @@ pwrite_with_ioctl(const void *buffer, uint64 blkno)
 		.length = POSTGRES_PAGE_SIZE,
 		.buffer = (__u64)(uintptr_t) buffer
 	};
-	return ioctl(lfc_desc, NEON_IOCTL_READ, &args);
+	return ioctl(lfc_desc, NEON_IOCTL_WRITE, &args);
 }
 
 /*