diff --git a/src/intel/compiler/brw_lower_logical_sends.cpp b/src/intel/compiler/brw_lower_logical_sends.cpp
index b7610a1347a..387c64f4699 100644
--- a/src/intel/compiler/brw_lower_logical_sends.cpp
+++ b/src/intel/compiler/brw_lower_logical_sends.cpp
@@ -1229,7 +1229,7 @@ lower_sampler_logical_send_gfx7(const fs_builder &bld, fs_inst *inst, opcode op,
    }
 
    /* Message length > MAX_SAMPLER_MESSAGE_SIZE disallowed by hardware. */
-   assert(inst->mlen <= MAX_SAMPLER_MESSAGE_SIZE);
+   assert(inst->mlen <= MAX_SAMPLER_MESSAGE_SIZE * reg_unit(devinfo));
 }
 
 static unsigned