Index: nano.c
==================================================================
--- nano.c
+++ nano.c
@@ -417,11 +417,11 @@
 	unsigned int offset;
 	int work_valid;
 
 	memcpy(work, blockhash, sizeof(work));
 
-	#pragma omp target
+#pragma omp target map(tofrom:work)
 	while (1) {
 		work_valid = nano_validate_work(blockhash, work, workMin);
 		if (work_valid) {
 			break;
 		}