diff --git a/src/main/java/net/vulkanmod/mixin/render/GlStateManagerM.java b/src/main/java/net/vulkanmod/mixin/render/GlStateManagerM.java
index fb460b49c..594a3cfaf 100644
--- a/src/main/java/net/vulkanmod/mixin/render/GlStateManagerM.java
+++ b/src/main/java/net/vulkanmod/mixin/render/GlStateManagerM.java
@@ -178,6 +178,8 @@ public static int _getTexLevelParameter(int i, int j, int k) {
     @Overwrite(remap = false)
     public static void _pixelStore(int pname, int param) {
         //Used during upload to set copy offsets
+        RenderSystem.assertOnRenderThreadOrInit();
+        GlTexture.pixelStoreI(pname, param);
     }
 
     /**