diff --git a/src/intel/compiler/brw/brw_from_nir.cpp b/src/intel/compiler/brw/brw_from_nir.cpp
index 986ead9f8df..ccd51256ac8 100644
--- a/src/intel/compiler/brw/brw_from_nir.cpp
+++ b/src/intel/compiler/brw/brw_from_nir.cpp
@@ -521,6 +521,9 @@ optimize_frontfacing_ternary(nir_to_brw_state &ntb,
    const intel_device_info *devinfo = ntb.devinfo;
    brw_shader &s = ntb.s;
 
+   if (instr->def.bit_size != 32)
+      return false;
+
    nir_intrinsic_instr *src0 = nir_src_as_intrinsic(instr->src[0].src);
    if (src0 == NULL || src0->intrinsic != nir_intrinsic_load_front_face)
       return false;