diff --git a/src/gallium/drivers/radeon/radeon_winsys.h b/src/gallium/drivers/radeon/radeon_winsys.h
index c2ebd0f69ff..e3314f2d57b 100644
--- a/src/gallium/drivers/radeon/radeon_winsys.h
+++ b/src/gallium/drivers/radeon/radeon_winsys.h
@@ -198,8 +198,8 @@ struct radeon_cmdbuf_chunk {
 struct radeon_cmdbuf {
    struct radeon_cmdbuf_chunk current;
    struct radeon_cmdbuf_chunk *prev;
-   unsigned num_prev; /* Number of previous chunks. */
-   unsigned max_prev; /* Space in array pointed to by prev. */
+   uint16_t num_prev; /* Number of previous chunks. */
+   uint16_t max_prev; /* Space in array pointed to by prev. */
    unsigned prev_dw;  /* Total number of dwords in previous chunks. */
 
    /* Memory usage of the buffer list. These are always 0 for preamble IBs. */