diff --git a/src/testbench_denano.c b/src/testbench_denano.c
index 85774d5..d4e9642 100644
--- a/src/testbench_denano.c
+++ b/src/testbench_denano.c
@@ -1028,7 +1028,9 @@ int main (void)
 		printf("-------------------------------------------\n");
 		printf("-- PI calc --------------------------------\n");
 		printf("-------------------------------------------\n");
+		interrupt_global_disable();
 		result = Test15_pi_calc();
+		interrupt_global_enable();
 		if (IS_ERROR(result))
 			break;
 		printf("passed\n\n");