diff --git a/src/main.c b/src/main.c
index 4a2bd6c..36f42e1 100644
--- a/src/main.c
+++ b/src/main.c
@@ -113,6 +113,8 @@ int main()
 			sseg_set_char(1, '0' + (ms_counter / 1000) % 10, true);
 			sseg_set_char(0, '0' + (ms_counter / 10000) % 10, false);
 		}
+
+		__asm("wfi");
 	}
 	return 0;
 }