diff --git a/MoltenVK/MoltenVK/GPUObjects/MVKPipeline.mm b/MoltenVK/MoltenVK/GPUObjects/MVKPipeline.mm
index 6abce41f..dc056f02 100644
--- a/MoltenVK/MoltenVK/GPUObjects/MVKPipeline.mm
+++ b/MoltenVK/MoltenVK/GPUObjects/MVKPipeline.mm
@@ -1834,7 +1834,10 @@ MVKComputePipeline::MVKComputePipeline(MVKDevice* device,
 	if (mtlFunc) {
 		MTLComputePipelineDescriptor* plDesc = [MTLComputePipelineDescriptor new];	// temp retain
 		plDesc.computeFunction = mtlFunc;
-		plDesc.maxTotalThreadsPerThreadgroup = _mtlThreadgroupSize.width * _mtlThreadgroupSize.height * _mtlThreadgroupSize.depth;
+		// Only available macOS 10.14+
+		if ([plDesc respondsToSelector:@selector(setMaxTotalThreadsPerThreadgroup:)]) {
+			plDesc.maxTotalThreadsPerThreadgroup = _mtlThreadgroupSize.width * _mtlThreadgroupSize.height * _mtlThreadgroupSize.depth;
+		}
 		plDesc.threadGroupSizeIsMultipleOfThreadExecutionWidth = mvkIsAnyFlagEnabled(pCreateInfo->stage.flags, VK_PIPELINE_SHADER_STAGE_CREATE_REQUIRE_FULL_SUBGROUPS_BIT_EXT);
 
 		// Metal does not allow the name of the pipeline to be changed after it has been created,