diff --git a/src/xrt/drivers/ohmd/oh_device.c b/src/xrt/drivers/ohmd/oh_device.c
index dba03e250..ea3fe9e90 100644
--- a/src/xrt/drivers/ohmd/oh_device.c
+++ b/src/xrt/drivers/ohmd/oh_device.c
@@ -703,14 +703,14 @@ u_compute_distortion_openhmd(struct openhmd_values *values, float u, float v, st
 }
 
 static bool
-compute_distortion_openhmd(struct xrt_device *xdev, int view, float u, float v, struct xrt_uv_triplet *result)
+compute_distortion_openhmd(struct xrt_device *xdev, uint32_t view, float u, float v, struct xrt_uv_triplet *result)
 {
 	struct oh_device *ohd = oh_device(xdev);
 	return u_compute_distortion_openhmd(&ohd->distortion.openhmd[view], u, v, result);
 }
 
 static bool
-compute_distortion_vive(struct xrt_device *xdev, int view, float u, float v, struct xrt_uv_triplet *result)
+compute_distortion_vive(struct xrt_device *xdev, uint32_t view, float u, float v, struct xrt_uv_triplet *result)
 {
 	struct oh_device *ohd = oh_device(xdev);
 	return u_compute_distortion_vive(&ohd->distortion.vive[view], u, v, result);
diff --git a/src/xrt/drivers/simula/svr_hmd.c b/src/xrt/drivers/simula/svr_hmd.c
index 38dfdbb66..00f50e796 100644
--- a/src/xrt/drivers/simula/svr_hmd.c
+++ b/src/xrt/drivers/simula/svr_hmd.c
@@ -127,7 +127,7 @@ svr_hmd_get_view_poses(struct xrt_device *xdev,
 
 //!@todo: remove hard-coding and move to u_distortion_mesh
 bool
-svr_mesh_calc(struct xrt_device *xdev, int view, float u, float v, struct xrt_uv_triplet *result)
+svr_mesh_calc(struct xrt_device *xdev, uint32_t view, float u, float v, struct xrt_uv_triplet *result)
 {
 	struct svr_hmd *svr = svr_hmd(xdev);