diff --git a/tcg/i386/tcg-target.c.inc b/tcg/i386/tcg-target.c.inc
index 4444eb9234..5a151fe64a 100644
--- a/tcg/i386/tcg-target.c.inc
+++ b/tcg/i386/tcg-target.c.inc
@@ -1082,7 +1082,7 @@ static void tcg_out_addi_ptr(TCGContext *s, TCGReg rd, TCGReg rs,
                              tcg_target_long imm)
 {
     /* This function is only used for passing structs by reference. */
-    tcg_debug_assert(TCG_TARGET_REG_BITS == 32);
+    tcg_debug_assert(imm == (int32_t)imm);
     tcg_out_modrm_offset(s, OPC_LEA, rd, rs, imm);
 }