diff --git a/libc/kernel/uapi/linux/dma-buf.h b/libc/kernel/uapi/linux/dma-buf.h
index 221c20f..4e31379 100644
--- a/libc/kernel/uapi/linux/dma-buf.h
+++ b/libc/kernel/uapi/linux/dma-buf.h
@@ -32,6 +32,6 @@
 #define DMA_BUF_BASE 'b'
 #define DMA_BUF_IOCTL_SYNC _IOW(DMA_BUF_BASE, 0, struct dma_buf_sync)
 #define DMA_BUF_SET_NAME _IOW(DMA_BUF_BASE, 1, const char *)
-#define DMA_BUF_SET_NAME_A _IOW(DMA_BUF_BASE, 1, u32)
-#define DMA_BUF_SET_NAME_B _IOW(DMA_BUF_BASE, 1, u64)
+#define DMA_BUF_SET_NAME_A _IOW(DMA_BUF_BASE, 1, __u32)
+#define DMA_BUF_SET_NAME_B _IOW(DMA_BUF_BASE, 1, __u64)
 #endif