diff --git a/tests/baz/1.0/default/Baz.cpp b/tests/baz/1.0/default/Baz.cpp
index 8e57fa06da..6252fbed8a 100644
--- a/tests/baz/1.0/default/Baz.cpp
+++ b/tests/baz/1.0/default/Baz.cpp
@@ -33,7 +33,6 @@ static std::string to_string(const IBaz::Foo &foo);
 static std::string to_string(const hidl_string &s);
 static std::string to_string(bool x);
 static std::string to_string(const IBaz::StringMatrix5x3 &M);
-static std::string to_string(const IBaz::StringMatrix3x5 &M);
 
 template<typename T, size_t SIZE>
 static std::string to_string(const hidl_array<T, SIZE> &array);
@@ -145,10 +144,6 @@ static std::string to_string(const IBaz::StringMatrix5x3 &M) {
     return to_string(M.s);
 }
 
-static std::string to_string(const IBaz::StringMatrix3x5 &M) {
-    return to_string(M.s);
-}
-
 static std::string VectorOfArray_to_string(const IBaz::VectorOfArray &in) {
     std::string out;
     out += "VectorOfArray(";