diff --git a/src/gallium/frontends/rusticl/core/device.rs b/src/gallium/frontends/rusticl/core/device.rs
index 8058f5cbb79..0a5e07ffb5a 100644
--- a/src/gallium/frontends/rusticl/core/device.rs
+++ b/src/gallium/frontends/rusticl/core/device.rs
@@ -856,7 +856,7 @@ impl Device {
     pub fn param_max_size(&self) -> usize {
         min(
             self.shader_param(pipe_shader_cap::PIPE_SHADER_CAP_MAX_CONST_BUFFER0_SIZE) as u32,
-            32 * 1024,
+            4 * 1024,
         ) as usize
     }