diff --git a/src/intel/compiler/brw_fs_saturate_propagation.cpp b/src/intel/compiler/brw_fs_saturate_propagation.cpp
index 1abd5411931..3d8b3e68a84 100644
--- a/src/intel/compiler/brw_fs_saturate_propagation.cpp
+++ b/src/intel/compiler/brw_fs_saturate_propagation.cpp
@@ -75,6 +75,9 @@ opt_saturate_propagation_local(fs_visitor &s, bblock_t *block)
                  !scan_inst->can_change_types()))
                break;
 
+            if (scan_inst->flags_written(s.devinfo) != 0)
+               break;
+
             if (scan_inst->saturate) {
                inst->saturate = false;
                progress = true;