diff --git a/src/script/sign.cpp b/src/script/sign.cpp
index f4252155497..9b3f94f14d4 100644
--- a/src/script/sign.cpp
+++ b/src/script/sign.cpp
@@ -186,6 +186,8 @@ static CScript PushAll(const std::vector<valtype>& values)
             result << OP_0;
         } else if (v.size() == 1 && v[0] >= 1 && v[0] <= 16) {
             result << CScript::EncodeOP_N(v[0]);
+        } else if (v.size() == 1 && v[0] == 0x81) {
+            result << OP_1NEGATE;
         } else {
             result << v;
         }
diff --git a/src/test/transaction_tests.cpp b/src/test/transaction_tests.cpp
index 4bf6e734ce2..c30f44292c5 100644
--- a/src/test/transaction_tests.cpp
+++ b/src/test/transaction_tests.cpp
@@ -361,6 +361,8 @@ static CScript PushAll(const std::vector<valtype>& values)
             result << OP_0;
         } else if (v.size() == 1 && v[0] >= 1 && v[0] <= 16) {
             result << CScript::EncodeOP_N(v[0]);
+        } else if (v.size() == 1 && v[0] == 0x81) {
+            result << OP_1NEGATE;
         } else {
             result << v;
         }