diff --git a/test_conformance/compiler/test_compiler_defines_for_extensions.cpp b/test_conformance/compiler/test_compiler_defines_for_extensions.cpp
index d53af8dc..89626b79 100644
--- a/test_conformance/compiler/test_compiler_defines_for_extensions.cpp
+++ b/test_conformance/compiler/test_compiler_defines_for_extensions.cpp
@@ -76,6 +76,7 @@ const char *known_extensions[] = {
     "cl_khr_device_uuid",
     "cl_khr_pci_bus_info",
     "cl_khr_suggested_local_work_size",
+    "cl_khr_expect_assume",
     "cl_khr_spirv_linkonce_odr",
     "cl_khr_semaphore",
     "cl_khr_external_semaphore",