diff --git a/versions/1.21.5/src/main/java/org/saturnclient/impl/mixins/MatrixStackMixin.java b/versions/1.21.5/src/main/java/org/saturnclient/impl/mixins/MatrixStackMixin.java
index d8e88a4..5ae8f85 100644
--- a/versions/1.21.5/src/main/java/org/saturnclient/impl/mixins/MatrixStackMixin.java
+++ b/versions/1.21.5/src/main/java/org/saturnclient/impl/mixins/MatrixStackMixin.java
@@ -1,57 +1,44 @@
 package org.saturnclient.impl.mixins;
-
 import org.joml.Quaternionf;
+import org.joml.Quaternionfc;
 import org.saturnclient.common.ref.render.MatrixStackRef;
 import org.saturnclient.common.ref.render.QuaternionfRef;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.gen.Invoker;
-
 import net.minecraft.client.util.math.MatrixStack;
 
 @Mixin(MatrixStack.class)
 public abstract class MatrixStackMixin implements MatrixStackRef {
-
     @Shadow
     public abstract void translate(double x, double y, double z);
-
     @Shadow
     public abstract void translate(float x, float y, float z);
-
     @Shadow
     public abstract void scale(float x, float y, float z);
-
     @Shadow
-    public abstract void multiply(Quaternionf quaternion);
-
+    public abstract void multiply(Quaternionfc quaternion);
     @Shadow
-    public abstract void multiply(Quaternionf quaternion, float originX, float originY, float originZ);
-
+    public abstract void multiply(Quaternionfc quaternion, float originX, float originY, float originZ);
     @Shadow
     public abstract void push();
-
     @Shadow
     public abstract void pop();
-
     @Invoker("peek")
     public abstract MatrixStack.Entry peekM();
-
     @Shadow
     public abstract boolean isEmpty();
-
     @Shadow
     public abstract void loadIdentity();
 
     @Override
     public void multiply(QuaternionfRef quaternion) {
-        this.multiply((Quaternionf) quaternion);
+        this.multiply((Quaternionfc) quaternion);
     }
-
     @Override
     public void multiply(QuaternionfRef quaternion, float originX, float originY, float originZ) {
-        this.multiply((Quaternionf) quaternion, originX, originY, originZ);
+        this.multiply((Quaternionfc) quaternion, originX, originY, originZ);
     }
-
     @Override
     public Object peek() {
         return this.peekM();