diff --git a/test/tools/ossfuzz/AbiV2IsabelleFuzzer.cpp b/test/tools/ossfuzz/AbiV2IsabelleFuzzer.cpp
index 12b13ae9d..6a12878e1 100644
--- a/test/tools/ossfuzz/AbiV2IsabelleFuzzer.cpp
+++ b/test/tools/ossfuzz/AbiV2IsabelleFuzzer.cpp
@@ -58,8 +58,9 @@ DEFINE_PROTO_FUZZER(Contract const& _contract)
 		// We target the default EVM which is the latest
 		langutil::EVMVersion version;
 		EVMHost hostContext(version, evmone);
-		string contractName = ":C";
-		CompilerInput cInput(version, {{"test.sol", contractSource}}, contractName, OptimiserSettings::minimal(), {});
+		string contractName = "C";
+		StringMap source({{"test.sol", contractSource}});
+		CompilerInput cInput(version, source, contractName, OptimiserSettings::minimal(), {});
 		EvmoneUtility evmoneUtil(
 			hostContext,
 			cInput,
diff --git a/test/tools/ossfuzz/SolidityEvmoneInterface.h b/test/tools/ossfuzz/SolidityEvmoneInterface.h
index 12a373428..980eb9a84 100644
--- a/test/tools/ossfuzz/SolidityEvmoneInterface.h
+++ b/test/tools/ossfuzz/SolidityEvmoneInterface.h
@@ -61,7 +61,7 @@ struct CompilerInput
 	langutil::EVMVersion evmVersion;
 	/// Source code to be compiled
 	StringMap const& sourceCode;
-	/// Contract name
+	/// Contract name without a colon prefix
 	std::string contractName;
 	/// Optimiser setting to be used during compilation
 	frontend::OptimiserSettings optimiserSettings;
diff --git a/test/tools/ossfuzz/abiV2ProtoFuzzer.cpp b/test/tools/ossfuzz/abiV2ProtoFuzzer.cpp
index c498162e5..f24d4f12d 100644
--- a/test/tools/ossfuzz/abiV2ProtoFuzzer.cpp
+++ b/test/tools/ossfuzz/abiV2ProtoFuzzer.cpp
@@ -48,9 +48,10 @@ DEFINE_PROTO_FUZZER(Contract const& _input)
 	// We target the default EVM which is the latest
 	langutil::EVMVersion version;
 	EVMHost hostContext(version, evmone);
-	string contractName = ":C";
+	string contractName = "C";
 	string methodName = "test()";
-	CompilerInput cInput(version, {{"test.sol", contract_source}}, contractName, OptimiserSettings::minimal(), {});
+	StringMap source({{"test.sol", contract_source}});
+	CompilerInput cInput(version, source, contractName, OptimiserSettings::minimal(), {});
 	EvmoneUtility evmoneUtil(
 		hostContext,
 		cInput,
diff --git a/test/tools/ossfuzz/solProtoFuzzer.cpp b/test/tools/ossfuzz/solProtoFuzzer.cpp
index 194fd63a2..a752e2119 100644
--- a/test/tools/ossfuzz/solProtoFuzzer.cpp
+++ b/test/tools/ossfuzz/solProtoFuzzer.cpp
@@ -66,10 +66,11 @@ DEFINE_PROTO_FUZZER(Program const& _input)
 	// We target the default EVM which is the latest
 	langutil::EVMVersion version;
 	EVMHost hostContext(version, evmone);
-	string contractName = ":C";
+	string contractName = "C";
 	string libraryName = converter.libraryTest() ? converter.libraryName() : "";
 	string methodName = "test()";
-	CompilerInput cInput(version, {{"test.sol", sol_source}}, contractName, OptimiserSettings::minimal(), {});
+	StringMap source({{"test.sol", sol_source}});
+	CompilerInput cInput(version, source, contractName, OptimiserSettings::minimal(), {});
 	EvmoneUtility evmoneUtil(
 		hostContext,
 		cInput,