diff --git a/utils/wasmbin/testscan/inst_const_i64_neg.wat b/utils/wasmbin/testscan/inst_const_i64_neg.wat
index dcafd8c7d9..b19125939d 100644
--- a/utils/wasmbin/testscan/inst_const_i64_neg.wat
+++ b/utils/wasmbin/testscan/inst_const_i64_neg.wat
@@ -1,5 +1,5 @@
 (module
   (func $add (result i64)
-    i64.const -13
+    i64.const -9223372036854775808
   )
 )
diff --git a/utils/wasmbin/testscan/inst_const_i64_pos.wat b/utils/wasmbin/testscan/inst_const_i64_pos.wat
index e2395539f2..a0bc4436ae 100644
--- a/utils/wasmbin/testscan/inst_const_i64_pos.wat
+++ b/utils/wasmbin/testscan/inst_const_i64_pos.wat
@@ -1,5 +1,5 @@
 (module
   (func $add (result i64)
-    i64.const 9223372036854775807
+    i64.const +9223372036854775807
   )
 )