diff --git a/core/src/main/java/com/seibel/distanthorizons/core/multiplayer/config/SessionConfig.java b/core/src/main/java/com/seibel/distanthorizons/core/multiplayer/config/SessionConfig.java
index af5b2448e..0076d0738 100644
--- a/core/src/main/java/com/seibel/distanthorizons/core/multiplayer/config/SessionConfig.java
+++ b/core/src/main/java/com/seibel/distanthorizons/core/multiplayer/config/SessionConfig.java
@@ -9,7 +9,7 @@ import io.netty.buffer.ByteBuf;
 
 import java.io.Closeable;
 import java.util.*;
-import java.util.function.BiFunction;
+import java.util.function.BinaryOperator;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 
@@ -82,7 +82,7 @@ public class SessionConfig implements INetworkObject
 	// entry registration //
 	//====================//
 	
-	private static <T> void registerConfigEntry(ConfigEntry<T> configEntry, BiFunction<T, T, T> valueConstrainer)
+	private static <T> void registerConfigEntry(ConfigEntry<T> configEntry, BinaryOperator<T> valueConstrainer)
 	{
 		CONFIG_ENTRIES.compute(Objects.requireNonNull(configEntry.getChatCommandName()), (key, existingEntry) -> {
 			if (existingEntry != null)
@@ -170,13 +170,13 @@ public class SessionConfig implements INetworkObject
 	private static class Entry
 	{
 		public final ConfigEntry<Object> supplier;
-		public final BiFunction<Object, Object, Object> valueConstrainer;
+		public final BinaryOperator<Object> valueConstrainer;
 		
 		@SuppressWarnings("unchecked")
-		private <T> Entry(ConfigEntry<T> supplier, BiFunction<T, T, T> valueConstrainer)
+		private <T> Entry(ConfigEntry<T> supplier, BinaryOperator<T> valueConstrainer)
 		{
 			this.supplier = (ConfigEntry<Object>) supplier;
-			this.valueConstrainer = (BiFunction<Object, Object, Object>) valueConstrainer;
+			this.valueConstrainer = (BinaryOperator<Object>) valueConstrainer;
 		}
 		
 	}