diff --git a/src/kservice.c b/src/kservice.c
index e9972dba97..dfb37dd888 100644
--- a/src/kservice.c
+++ b/src/kservice.c
@@ -30,6 +30,10 @@
 /* use precision */
 #define RT_PRINTF_PRECISION
 
+#ifdef ARCH_CPU_64BIT
+    #define RT_PRINTF_LONGLONG
+#endif
+
 /**
  * @addtogroup KernelService
  */