diff --git a/test/controls/control_info_map.cpp b/test/controls/control_info_map.cpp
index b0be14b58..6c20ee8d0 100644
--- a/test/controls/control_info_map.cpp
+++ b/test/controls/control_info_map.cpp
@@ -49,7 +49,7 @@ protected:
 			return TestFail;
 		}
 
-		infoMap.at(&controls::Brightness);
+		std::ignore = infoMap.at(&controls::Brightness);
 
 		/* Test looking up a valid control by numerical ID. */
 		if (infoMap.count(controls::Brightness.id()) != 1) {