diff --git a/launcher/src/main/java/com/skcraft/launcher/model/minecraft/MinecraftArguments.java b/launcher/src/main/java/com/skcraft/launcher/model/minecraft/MinecraftArguments.java
index 5a5ba50..801e2d2 100644
--- a/launcher/src/main/java/com/skcraft/launcher/model/minecraft/MinecraftArguments.java
+++ b/launcher/src/main/java/com/skcraft/launcher/model/minecraft/MinecraftArguments.java
@@ -4,7 +4,9 @@ import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
 import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
 import com.skcraft.launcher.model.minecraft.mapper.MinecraftArgumentsDeserializer;
+import com.skcraft.launcher.model.minecraft.mapper.MinecraftArgumentsSerializer;
 import lombok.Data;
 
 import java.util.List;
@@ -14,11 +16,13 @@ import java.util.List;
 public class MinecraftArguments {
 	@JsonProperty("game")
 	@JsonTypeInfo(use = JsonTypeInfo.Id.NONE)
+	@JsonSerialize(contentUsing = MinecraftArgumentsSerializer.class)
 	@JsonDeserialize(contentUsing = MinecraftArgumentsDeserializer.class)
 	private List<GameArgument> gameArguments;
 
 	@JsonProperty("jvm")
 	@JsonTypeInfo(use = JsonTypeInfo.Id.NONE)
+	@JsonSerialize(contentUsing =  MinecraftArgumentsSerializer.class)
 	@JsonDeserialize(contentUsing = MinecraftArgumentsDeserializer.class)
 	private List<GameArgument> jvmArguments;
 }
diff --git a/launcher/src/main/java/com/skcraft/launcher/model/minecraft/mapper/MinecraftArgumentsSerializer.java b/launcher/src/main/java/com/skcraft/launcher/model/minecraft/mapper/MinecraftArgumentsSerializer.java
new file mode 100644
index 0000000..7b579a2
--- /dev/null
+++ b/launcher/src/main/java/com/skcraft/launcher/model/minecraft/mapper/MinecraftArgumentsSerializer.java
@@ -0,0 +1,24 @@
+package com.skcraft.launcher.model.minecraft.mapper;
+
+import com.fasterxml.jackson.core.JsonGenerationException;
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
+import com.skcraft.launcher.model.minecraft.GameArgument;
+
+import java.io.IOException;
+
+public class MinecraftArgumentsSerializer extends StdSerializer<GameArgument> {
+	protected MinecraftArgumentsSerializer() {
+		super(GameArgument.class);
+	}
+
+	@Override
+	public void serialize(GameArgument value, JsonGenerator jgen, SerializerProvider provider) throws IOException, JsonGenerationException {
+		if (value.getValues().size() == 1 && (value.getRules() == null || value.getRules().size() == 0)) {
+			jgen.writeString(value.getValues().get(0));
+		} else {
+			provider.defaultSerializeValue(value, jgen);
+		}
+	}
+}