diff --git a/src/gui/render.cpp b/src/gui/render.cpp
index 89a8334c..f852767c 100644
--- a/src/gui/render.cpp
+++ b/src/gui/render.cpp
@@ -581,9 +581,9 @@ void RENDER_Init(Section * sec) {
 	std::string cline;
 	std::string scaler;
 	//Check for commandline paramters and parse them through the configclass so they get checked against allowed values
-	if (control->cmdline->FindString("-scaler",cline,false)) {
+	if (control->cmdline->FindString("-scaler",cline,true)) {
 		section->HandleInputline(std::string("scaler=") + cline);
-	} else if (control->cmdline->FindString("-forcescaler",cline,false)) {
+	} else if (control->cmdline->FindString("-forcescaler",cline,true)) {
 		section->HandleInputline(std::string("scaler=") + cline + " forced");
 	}