diff --git a/system/camerad/sensors/os04c10_cl.h b/system/camerad/sensors/os04c10_cl.h
index a84b93f22b..1f2d3a9be8 100644
--- a/system/camerad/sensors/os04c10_cl.h
+++ b/system/camerad/sensors/os04c10_cl.h
@@ -9,7 +9,7 @@
 #define VIGNETTE_RSZ 2.2545f
 
 float combine_dual_pvs(float lv, float sv, int expo_time) {
-  float svc = fmax(sv * expo_time, 61376.0);
+  float svc = fmax(sv * expo_time, (float)(64 * (PV_MAX10 - BLACK_LVL)));
   float svd = sv * fmin(expo_time, 8.0) / 8;
 
   if (expo_time > 64) {
@@ -52,4 +52,4 @@ float3 apply_gamma(float3 rgb, int expo_time) {
   return clamp(log(1 + rgb*(PV_MAX16 - BLACK_LVL)) * (0.48*s*s - 12.92*s + 115.0) - (1.08*s*s - 29.2*s + 260.0), 0.0, 255.0) / 255.0;
 }
 
-#endif
\ No newline at end of file
+#endif