diff --git a/src/gallium/drivers/vc4/vc4_program.c b/src/gallium/drivers/vc4/vc4_program.c
index 4cee99f1577..692d9d6d7d9 100644
--- a/src/gallium/drivers/vc4/vc4_program.c
+++ b/src/gallium/drivers/vc4/vc4_program.c
@@ -1368,6 +1368,7 @@ vc4_optimize_nir(struct nir_shader *s)
 
                 NIR_PASS_V(s, nir_lower_vars_to_ssa);
                 NIR_PASS_V(s, nir_lower_alu_to_scalar);
+                NIR_PASS_V(s, nir_lower_phis_to_scalar);
 
                 NIR_PASS(progress, s, nir_copy_prop);
                 NIR_PASS(progress, s, nir_opt_dce);