diff --git a/src/lc-compliance/capture_test.cpp b/src/lc-compliance/capture_test.cpp
index 49012048729e..40242fbbc0ba 100644
--- a/src/lc-compliance/capture_test.cpp
+++ b/src/lc-compliance/capture_test.cpp
@@ -18,6 +18,18 @@ using namespace libcamera;
 const std::vector<int> NUMREQUESTS = { 1, 2, 3, 5, 8, 13, 21, 34, 55, 89 };
 const std::vector<StreamRole> ROLES = { Raw, StillCapture, VideoRecording, Viewfinder };
 
+static const std::string &roleToString(const StreamRole &role)
+{
+	static const std::map<StreamRole, std::string> rolesMap = {
+		{ Raw, "Raw" },
+		{ StillCapture, "StillCapture" },
+		{ VideoRecording, "VideoRecording" },
+		{ Viewfinder, "Viewfinder" }
+	};
+
+	return rolesMap.at(role);
+}
+
 class SingleStream : public testing::TestWithParam<std::tuple<StreamRole, int>>, public CameraHolder
 {
 public:
@@ -44,15 +56,8 @@ void SingleStream::TearDown()
 
 std::string SingleStream::nameParameters(const testing::TestParamInfo<SingleStream::ParamType> &info)
 {
-	std::map<StreamRole, std::string> rolesMap = { { Raw, "Raw" },
-						       { StillCapture, "StillCapture" },
-						       { VideoRecording, "VideoRecording" },
-						       { Viewfinder, "Viewfinder" } };
-
-	std::string roleName = rolesMap[std::get<0>(info.param)];
-	std::string numRequestsName = std::to_string(std::get<1>(info.param));
-
-	return roleName + "_" + numRequestsName;
+	return roleToString(std::get<0>(info.param)) + "_" +
+	       std::to_string(std::get<1>(info.param));
 }
 
 /*