diff --git a/test/tools/ossfuzz/protomutators/YulProtoMutator.cpp b/test/tools/ossfuzz/protomutators/YulProtoMutator.cpp
index fe815101f..d4f97bbd8 100644
--- a/test/tools/ossfuzz/protomutators/YulProtoMutator.cpp
+++ b/test/tools/ossfuzz/protomutators/YulProtoMutator.cpp
@@ -5,7 +5,7 @@
 
 #define DEBUG
 
-using namespace yul::test::yul_fuzzer;
+using namespace solidity::yul::test::yul_fuzzer;
 
 /// Invert condition of an if statement
 static YulProtoMutator invertIfCondition(
@@ -1452,4 +1452,4 @@ UnaryOp* YulProtoMutator::loadExpression(unsigned _seed)
 		break;
 	}
 	return unop;
-}
\ No newline at end of file
+}
diff --git a/test/tools/ossfuzz/protomutators/YulProtoMutator.h b/test/tools/ossfuzz/protomutators/YulProtoMutator.h
index a727e7631..bace8b2d2 100644
--- a/test/tools/ossfuzz/protomutators/YulProtoMutator.h
+++ b/test/tools/ossfuzz/protomutators/YulProtoMutator.h
@@ -4,11 +4,7 @@
 
 #include <src/libfuzzer/libfuzzer_macro.h>
 
-namespace yul
-{
-namespace test
-{
-namespace yul_fuzzer
+namespace solidity::yul::test::yul_fuzzer
 {
 struct YulProtoMutator
 {
@@ -92,5 +88,3 @@ struct YulProtoMutator
 	static constexpr unsigned s_normalizedBlockIP = 7;
 };
 }
-}
-}
\ No newline at end of file