diff --git a/src/package/pikascript/pikascript-core b/src/package/pikascript/pikascript-core
index 217f0178a..3feb60f42 160000
--- a/src/package/pikascript/pikascript-core
+++ b/src/package/pikascript/pikascript-core
@@ -1 +1 @@
-Subproject commit 217f0178af36d344c90dbf3c9871c9debeeeca96
+Subproject commit 3feb60f428ff29230eda3f7020a2f7854e277df0
diff --git a/src/package/pikascript/pikascript-lib/PikaStdLib/PikaStdLib_MemChecker.c b/src/package/pikascript/pikascript-lib/PikaStdLib/PikaStdLib_MemChecker.c
index a85ae1be8..223de7fa8 100644
--- a/src/package/pikascript/pikascript-lib/PikaStdLib/PikaStdLib_MemChecker.c
+++ b/src/package/pikascript/pikascript-lib/PikaStdLib/PikaStdLib_MemChecker.c
@@ -3,12 +3,12 @@
 
 void PikaStdLib_MemChecker_max(PikaObj *self)
 {
-    printf("%0.2f kB\r\n", pikaMemMax() / 1024.0);
+    obj_sysPrintf(self, "%0.2f kB", pikaMemMax() / 1024.0);
 }
 
 void PikaStdLib_MemChecker_now(PikaObj *self)
 {
-    printf("%0.2f kB\r\n", pikaMemNow() / 1024.0);
+    obj_sysPrintf(self, "%0.2f kB", pikaMemNow() / 1024.0);
 }
 
 void PikaStdLib_MemChecker_resetMax(PikaObj *self)