diff --git a/src/intel/compiler/brw_fs.cpp b/src/intel/compiler/brw_fs.cpp
index 40896db26b3..815650706cd 100644
--- a/src/intel/compiler/brw_fs.cpp
+++ b/src/intel/compiler/brw_fs.cpp
@@ -842,6 +842,8 @@ fs_inst::size_read(int arg) const
    case SHADER_OPCODE_TYPED_ATOMIC:
    case SHADER_OPCODE_TYPED_SURFACE_READ:
    case SHADER_OPCODE_TYPED_SURFACE_WRITE:
+   case FS_OPCODE_INTERPOLATE_AT_SAMPLE:
+   case FS_OPCODE_INTERPOLATE_AT_SHARED_OFFSET:
    case FS_OPCODE_INTERPOLATE_AT_PER_SLOT_OFFSET:
    case SHADER_OPCODE_BYTE_SCATTERED_WRITE:
    case SHADER_OPCODE_BYTE_SCATTERED_READ: