diff --git a/test/eoftest/eoftest_runner.cpp b/test/eoftest/eoftest_runner.cpp
index b2645568b6..6362446163 100644
--- a/test/eoftest/eoftest_runner.cpp
+++ b/test/eoftest/eoftest_runner.cpp
@@ -16,6 +16,7 @@ namespace evmone::test
 
 namespace
 {
+    
 struct EOFValidationTest
 {
     struct Case
diff --git a/test/utils/utils.cpp b/test/utils/utils.cpp
new file mode 100644
index 0000000000..3c0cf284a2
--- /dev/null
+++ b/test/utils/utils.cpp
@@ -0,0 +1,46 @@
+// evmone: Fast Ethereum Virtual Machine implementation
+// Copyright 2023 The evmone Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+#include "utils.hpp"
+
+namespace evmone::test
+{
+
+/// Translates tests fork name to EVM revision
+evmc_revision to_rev(std::string_view s)
+{
+    if (s == "Frontier")
+        return EVMC_FRONTIER;
+    if (s == "Homestead")
+        return EVMC_HOMESTEAD;
+    if (s == "EIP150")
+        return EVMC_TANGERINE_WHISTLE;
+    if (s == "EIP158")
+        return EVMC_SPURIOUS_DRAGON;
+    if (s == "Byzantium")
+        return EVMC_BYZANTIUM;
+    if (s == "Constantinople")
+        return EVMC_CONSTANTINOPLE;
+    if (s == "ConstantinopleFix")
+        return EVMC_PETERSBURG;
+    if (s == "Istanbul")
+        return EVMC_ISTANBUL;
+    if (s == "Berlin")
+        return EVMC_BERLIN;
+    if (s == "London")
+        return EVMC_LONDON;
+    if (s == "Merge")
+        return EVMC_PARIS;
+    if (s == "Merge+3855")  // PUSH0
+        return EVMC_SHANGHAI;
+    if (s == "Shanghai")
+        return EVMC_SHANGHAI;
+    if (s == "Cancun")
+        return EVMC_CANCUN;
+    if (s == "Prague")
+        return EVMC_PRAGUE;
+    throw std::invalid_argument{"unknown revision: " + std::string{s}};
+}
+
+}
\ No newline at end of file
diff --git a/test/utils/utils.hpp b/test/utils/utils.hpp
index f0b0247052..f29e483408 100644
--- a/test/utils/utils.hpp
+++ b/test/utils/utils.hpp
@@ -12,6 +12,13 @@ using evmc::from_hex;
 using evmc::from_spaced_hex;
 using evmc::hex;
 
+namespace evmone::test
+{
+
+evmc_revision to_rev(std::string_view s);
+
+}  // namespace evmone::test
+
 /// Converts a string to bytes by casting individual characters.
 inline bytes to_bytes(std::string_view s)
 {
@@ -28,39 +35,3 @@ inline bytes operator""_hex(const char* s, size_t size)
 {
     return from_spaced_hex({s, size}).value();
 }
-
-/// Translates tests fork name to EVM revision
-inline evmc_revision to_rev(std::string_view s)
-{
-    if (s == "Frontier")
-        return EVMC_FRONTIER;
-    if (s == "Homestead")
-        return EVMC_HOMESTEAD;
-    if (s == "EIP150")
-        return EVMC_TANGERINE_WHISTLE;
-    if (s == "EIP158")
-        return EVMC_SPURIOUS_DRAGON;
-    if (s == "Byzantium")
-        return EVMC_BYZANTIUM;
-    if (s == "Constantinople")
-        return EVMC_CONSTANTINOPLE;
-    if (s == "ConstantinopleFix")
-        return EVMC_PETERSBURG;
-    if (s == "Istanbul")
-        return EVMC_ISTANBUL;
-    if (s == "Berlin")
-        return EVMC_BERLIN;
-    if (s == "London")
-        return EVMC_LONDON;
-    if (s == "Merge")
-        return EVMC_PARIS;
-    if (s == "Merge+3855")  // PUSH0
-        return EVMC_SHANGHAI;
-    if (s == "Shanghai")
-        return EVMC_SHANGHAI;
-    if (s == "Cancun")
-        return EVMC_CANCUN;
-    if (s == "Prague")
-        return EVMC_PRAGUE;
-    throw std::invalid_argument{"unknown revision: " + std::string{s}};
-}