diff --git a/src/compiler/nir/nir_builder.h b/src/compiler/nir/nir_builder.h
index d92583fb18d..83b2b6efd09 100644
--- a/src/compiler/nir/nir_builder.h
+++ b/src/compiler/nir/nir_builder.h
@@ -841,9 +841,8 @@ nir_ishl_imm(nir_builder *build, nir_ssa_def *x, uint32_t y)
 {
    if (y == 0) {
       return x;
-   } else if (y >= x->bit_size) {
-      return nir_imm_intN_t(build, 0, x->bit_size);
    } else {
+      assert (y < x->bit_size);
       return nir_ishl(build, x, nir_imm_int(build, y));
    }
 }