diff --git a/selfdrive/modeld/thneed/thneed.cc b/selfdrive/modeld/thneed/thneed.cc
index 76f13d279..e08370a70 100644
--- a/selfdrive/modeld/thneed/thneed.cc
+++ b/selfdrive/modeld/thneed/thneed.cc
@@ -41,6 +41,7 @@ int ioctl(int filedes, unsigned long request, void *argp) {
 
   if (request == IOCTL_KGSL_DRAWCTXT_CREATE) {
     struct kgsl_drawctxt_create *create = (struct kgsl_drawctxt_create *)argp;
+    create->flags &= ~KGSL_CONTEXT_PRIORITY_MASK;
     create->flags |= 1 << KGSL_CONTEXT_PRIORITY_SHIFT;   // priority from 1-15, 1 is max priority
     printf("creating context with flags 0x%x\n", create->flags);
   }