diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py
index b33fb6152a9..2eff041570f 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -264,6 +264,7 @@ optimizations += [
    (('ieq', ('ushr(is_used_once)', a, '#b'), 0), ('ult', a, ('ishl', 1, b))),
    (('ine', ('ushr(is_used_once)', a, '#b'), 0), ('uge', a, ('ishl', 1, b))),
    (('~fadd', ('fneg', a), a), 0.0),
+   (('fadd(nnan)', ('fneg', a), a), 0.0),
    (('iadd', ('ineg', a), a), 0),
    (('iadd', ('ineg', a), ('iadd', a, b)), b),
    (('iadd', a, ('iadd', ('ineg', a), b)), b),