diff --git a/src/Makefile.test_util.include b/src/Makefile.test_util.include
index 1e9553e745..1a805a1dd1 100644
--- a/src/Makefile.test_util.include
+++ b/src/Makefile.test_util.include
@@ -13,6 +13,7 @@ TEST_UTIL_H = \
     test/util/logging.h \
     test/util/mining.h \
     test/util/net.h \
+    test/util/script.h \
     test/util/setup_common.h \
     test/util/str.h \
     test/util/transaction_utils.h \
@@ -28,6 +29,7 @@ libtest_util_a_SOURCES = \
   test/util/logging.cpp \
   test/util/mining.cpp \
   test/util/net.cpp \
+  test/util/script.cpp \
   test/util/setup_common.cpp \
   test/util/str.cpp \
   test/util/transaction_utils.cpp \
diff --git a/src/test/fuzz/coins_view.cpp b/src/test/fuzz/coins_view.cpp
index da96d2fae0..ab69fd93d9 100644
--- a/src/test/fuzz/coins_view.cpp
+++ b/src/test/fuzz/coins_view.cpp
@@ -229,11 +229,8 @@ FUZZ_TARGET_INIT(coins_view, initialize_coins_view)
                     // consensus/tx_verify.cpp:171: bool Consensus::CheckTxInputs(const CTransaction &, TxValidationState&, const CCoinsViewCache &, int, CAmount &): Assertion `!coin.IsSpent()' failed.
                     return;
                 }
-                try {
-                    (void)Consensus::CheckTxInputs(transaction, state, coins_view_cache, fuzzed_data_provider.ConsumeIntegralInRange<int>(0, std::numeric_limits<int>::max()), tx_fee_out);
-                    assert(MoneyRange(tx_fee_out));
-                } catch (const std::runtime_error&) {
-                }
+                (void)Consensus::CheckTxInputs(transaction, state, coins_view_cache, fuzzed_data_provider.ConsumeIntegralInRange<int>(0, std::numeric_limits<int>::max()), tx_fee_out);
+                assert(MoneyRange(tx_fee_out));
             },
             [&] {
                 const CTransaction transaction{random_mutable_transaction};
diff --git a/src/test/fuzz/script_flags.cpp b/src/test/fuzz/script_flags.cpp
index bfabf3af73..c38dbfb4d8 100644
--- a/src/test/fuzz/script_flags.cpp
+++ b/src/test/fuzz/script_flags.cpp
@@ -5,13 +5,11 @@
 #include <pubkey.h>
 #include <script/interpreter.h>
 #include <streams.h>
+#include <test/util/script.h>
 #include <version.h>
 
 #include <test/fuzz/fuzz.h>
 
-/** Flags that are not forbidden by an assert */
-static bool IsValidFlagCombination(unsigned flags);
-
 FUZZ_TARGET(script_flags)
 {
     CDataStream ds(buffer, SER_NETWORK, INIT_PROTO_VERSION);
@@ -67,9 +65,3 @@ FUZZ_TARGET(script_flags)
         return;
     }
 }
-
-static bool IsValidFlagCombination(unsigned flags)
-{
-    if (flags & SCRIPT_VERIFY_CLEANSTACK && ~flags & SCRIPT_VERIFY_P2SH) return false;
-    return true;
-}
diff --git a/src/test/fuzz/signature_checker.cpp b/src/test/fuzz/signature_checker.cpp
index c0b083f2a8..175024b1f3 100644
--- a/src/test/fuzz/signature_checker.cpp
+++ b/src/test/fuzz/signature_checker.cpp
@@ -6,6 +6,8 @@
 #include <script/interpreter.h>
 #include <test/fuzz/FuzzedDataProvider.h>
 #include <test/fuzz/fuzz.h>
+#include <test/fuzz/util.h>
+#include <test/util/script.h>
 
 #include <cstdint>
 #include <limits>
@@ -45,14 +47,12 @@ FUZZ_TARGET(signature_checker)
 {
     FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
     const unsigned int flags = fuzzed_data_provider.ConsumeIntegral<unsigned int>();
-    const std::string script_string_1 = fuzzed_data_provider.ConsumeRandomLengthString(65536);
-    const std::vector<uint8_t> script_bytes_1{script_string_1.begin(), script_string_1.end()};
-    const std::string script_string_2 = fuzzed_data_provider.ConsumeRandomLengthString(65536);
-    const std::vector<uint8_t> script_bytes_2{script_string_2.begin(), script_string_2.end()};
+    const auto script_1 = ConsumeScript(fuzzed_data_provider, 65536);
+    const auto script_2 = ConsumeScript(fuzzed_data_provider, 65536);
     std::vector<std::vector<unsigned char>> stack;
-    (void)EvalScript(stack, {script_bytes_1.begin(), script_bytes_1.end()}, flags, FuzzedSignatureChecker(fuzzed_data_provider), SigVersion::BASE, nullptr);
-    if ((flags & SCRIPT_VERIFY_CLEANSTACK) != 0 && ((flags & SCRIPT_VERIFY_P2SH) == 0)) {
+    (void)EvalScript(stack, script_1, flags, FuzzedSignatureChecker(fuzzed_data_provider), SigVersion::BASE, nullptr);
+    if (!IsValidFlagCombination(flags)) {
         return;
     }
-    (void)VerifyScript({script_bytes_1.begin(), script_bytes_1.end()}, {script_bytes_2.begin(), script_bytes_2.end()}, flags, FuzzedSignatureChecker(fuzzed_data_provider), nullptr);
+    (void)VerifyScript(script_1, script_2, flags, FuzzedSignatureChecker(fuzzed_data_provider), nullptr);
 }
diff --git a/src/test/fuzz/util.cpp b/src/test/fuzz/util.cpp
index 9c1ae3d01b..12d6349c06 100644
--- a/src/test/fuzz/util.cpp
+++ b/src/test/fuzz/util.cpp
@@ -250,7 +250,7 @@ CMutableTransaction ConsumeTransaction(FuzzedDataProvider& fuzzed_data_provider,
 
 CScript ConsumeScript(FuzzedDataProvider& fuzzed_data_provider, const size_t max_length) noexcept
 {
-    const std::vector<uint8_t> b = ConsumeRandomLengthByteVector(fuzzed_data_provider);
+    const std::vector<uint8_t> b = ConsumeRandomLengthByteVector(fuzzed_data_provider, max_length);
     return {b.begin(), b.end()};
 }
 
diff --git a/src/test/util/script.cpp b/src/test/util/script.cpp
new file mode 100644
index 0000000000..5246f80a65
--- /dev/null
+++ b/src/test/util/script.cpp
@@ -0,0 +1,12 @@
+// Copyright (c) 2021 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <script/interpreter.h>
+#include <test/util/script.h>
+
+bool IsValidFlagCombination(unsigned flags)
+{
+    if (flags & SCRIPT_VERIFY_CLEANSTACK && ~flags & SCRIPT_VERIFY_P2SH) return false;
+    return true;
+}
diff --git a/src/test/util/script.h b/src/test/util/script.h
new file mode 100644
index 0000000000..215a943b1a
--- /dev/null
+++ b/src/test/util/script.h
@@ -0,0 +1,11 @@
+// Copyright (c) 2021 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_TEST_UTIL_SCRIPT_H
+#define BITCOIN_TEST_UTIL_SCRIPT_H
+
+/** Flags that are not forbidden by an assert in script validation */
+bool IsValidFlagCombination(unsigned flags);
+
+#endif // BITCOIN_TEST_UTIL_SCRIPT_H