diff --git a/src/panfrost/bifrost/bi_ra.c b/src/panfrost/bifrost/bi_ra.c
index c3c216bf251..0be5bdbf62f 100644
--- a/src/panfrost/bifrost/bi_ra.c
+++ b/src/panfrost/bifrost/bi_ra.c
@@ -74,8 +74,8 @@ bi_allocate_registers(bi_context *ctx, bool *success)
 
         if (ctx->is_blend) {
                 /* R0-R3 are reserved for the blend input */
-                l->class_start[BI_REG_CLASS_WORK] = 4 * 4;
-                l->class_size[BI_REG_CLASS_WORK] = 64 * 4;
+                l->class_start[BI_REG_CLASS_WORK] = 0;
+                l->class_size[BI_REG_CLASS_WORK] = 16 * 4;
         } else {
                 /* R0 - R63, all 32-bit */
                 l->class_start[BI_REG_CLASS_WORK] = 0;