diff --git a/launcher/minecraft/MinecraftInstance.cpp b/launcher/minecraft/MinecraftInstance.cpp
index 2c7d8558..8f7d16fb 100644
--- a/launcher/minecraft/MinecraftInstance.cpp
+++ b/launcher/minecraft/MinecraftInstance.cpp
@@ -440,7 +440,7 @@ QStringList MinecraftInstance::processMinecraftArgs(
         }
     }
 
-    if (quickPlayTarget && quickPlayTarget->world.isEmpty())
+    if (quickPlayTarget && !quickPlayTarget->world.isEmpty())
     {
         args_pattern += " --quickPlaySingleplayer \"" + quickPlayTarget->world + "\"";
     }