diff --git a/src/script/sign.cpp b/src/script/sign.cpp
--- a/src/script/sign.cpp
+++ b/src/script/sign.cpp
@@ -283,8 +283,10 @@
     Stacks() = delete;
     Stacks(const Stacks &) = delete;
     explicit Stacks(const SignatureData &data) {
-        EvalScript(script, data.scriptSig, MANDATORY_SCRIPT_VERIFY_FLAGS,
-                   BaseSignatureChecker());
+        if (data.scriptSig.IsPushOnly()) {
+            EvalScript(script, data.scriptSig, SCRIPT_VERIFY_NONE,
+                       BaseSignatureChecker());
+        }
     }
 };
 } // namespace