diff --git a/test_conformance/extensions/cl_khr_command_buffer/cl_khr_command_buffer_mutable_dispatch/mutable_command_basic.h b/test_conformance/extensions/cl_khr_command_buffer/cl_khr_command_buffer_mutable_dispatch/mutable_command_basic.h
index 51938dce02..c1697accbd 100644
--- a/test_conformance/extensions/cl_khr_command_buffer/cl_khr_command_buffer_mutable_dispatch/mutable_command_basic.h
+++ b/test_conformance/extensions/cl_khr_command_buffer/cl_khr_command_buffer_mutable_dispatch/mutable_command_basic.h
@@ -126,7 +126,7 @@ struct BasicMutableCommandBufferTest : BasicCommandBufferTest
     clUpdateMutableCommandsKHR_fn clUpdateMutableCommandsKHR = nullptr;
 
     const char* kernelString = "__kernel void empty() {}";
-    const size_t global_work_size = 4 * 16;
+    const size_t global_work_size = 256 * 1024;
 };
 
 struct InfoMutableCommandBufferTest : BasicMutableCommandBufferTest
diff --git a/test_conformance/extensions/cl_khr_command_buffer/cl_khr_command_buffer_mutable_dispatch/mutable_command_global_size.cpp b/test_conformance/extensions/cl_khr_command_buffer/cl_khr_command_buffer_mutable_dispatch/mutable_command_global_size.cpp
index 946fa995b3..4084961e39 100644
--- a/test_conformance/extensions/cl_khr_command_buffer/cl_khr_command_buffer_mutable_dispatch/mutable_command_global_size.cpp
+++ b/test_conformance/extensions/cl_khr_command_buffer/cl_khr_command_buffer_mutable_dispatch/mutable_command_global_size.cpp
@@ -153,9 +153,9 @@ struct MutableDispatchGlobalSize : public InfoMutableCommandBufferTest
     }
 
     size_t info_global_size = 0;
-    const size_t update_global_size = 3;
-    const size_t sizeToAllocate = global_work_size;
-    const size_t num_elements = sizeToAllocate / sizeof(cl_int);
+    const size_t update_global_size = 8 * 1024;
+    const size_t sizeToAllocate = global_work_size * 4;
+    const size_t num_elements = global_work_size;
     cl_mutable_command_khr command = nullptr;
 };