diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py
index 1e4ea528764..1c553c4038b 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -833,6 +833,7 @@ optimizations.extend([
    (('umin', ('umax', ('umin', ('umax', a, b), c), b), c), ('umin', ('umax', a, b), c)),
    # Both the left and right patterns are "b" when isnan(a), so this is exact.
    (('fmax', ('fsat', a), '#b(is_zero_to_one)'), ('fsat', ('fmax', a, b))),
+   (('fmax', ('fsat(is_used_once)', a), ('fsat(is_used_once)', b)), ('fsat', ('fmax', a, b))),
    # The left pattern is 0.0 when isnan(a) (because fmin(fsat(NaN), b) ->
    # fmin(0.0, b)) while the right one is "b", so this optimization is inexact.
    (('~fmin', ('fsat', a), '#b(is_zero_to_one)'), ('fsat', ('fmin', a, b))),