diff --git a/cli-miner.cpp b/cli-miner.cpp
index a4c509b..051a00f 100644
--- a/cli-miner.cpp
+++ b/cli-miner.cpp
@@ -142,6 +142,9 @@ int main(int argc, char *argv[])
 
 	executor::inst()->ex_start();
 
+	using namespace std::chrono;
+	uint64_t lastTime = time_point_cast<milliseconds>(high_resolution_clock::now()).time_since_epoch().count();
+
 	int key;
 	while(true)
 	{
@@ -161,6 +164,13 @@ int main(int argc, char *argv[])
 		default:
 			break;
 		}
+
+		uint64_t currentTime = time_point_cast<milliseconds>(high_resolution_clock::now()).time_since_epoch().count();
+
+		/* Hard guard to make sure we never get called more than twice per second */
+		if( currentTime - lastTime < 500)
+			std::this_thread::sleep_for(std::chrono::milliseconds(500 - (currentTime - lastTime)));
+		lastTime = currentTime;
 	}
 
 	return 0;