diff --git a/target/ppc/translate/vmx-impl.c.inc b/target/ppc/translate/vmx-impl.c.inc
index 7741f2eb49..764b76dcc6 100644
--- a/target/ppc/translate/vmx-impl.c.inc
+++ b/target/ppc/translate/vmx-impl.c.inc
@@ -2231,7 +2231,7 @@ static bool trans_VEXPANDQM(DisasContext *ctx, arg_VX_tb *a)
 static bool do_vextractm(DisasContext *ctx, arg_VX_tb *a, unsigned vece)
 {
     const uint64_t elem_width = 8 << vece, elem_count_half = 8 >> vece,
-                   mask = dup_const(vece, 1 << (elem_width - 1));
+                   mask = dup_const(vece, 1ULL << (elem_width - 1));
     uint64_t i, j;
     TCGv_i64 lo, hi, t0, t1;