diff --git a/port/linux/package/pikascript/pikascript-lib/PikaStdLib/PikaStdData_String_Util.h b/port/linux/package/pikascript/pikascript-lib/PikaStdLib/PikaStdData_String_Util.h
new file mode 100644
index 000000000..ff3b139e3
--- /dev/null
+++ b/port/linux/package/pikascript/pikascript-lib/PikaStdLib/PikaStdData_String_Util.h
@@ -0,0 +1 @@
+#include<ctype.h>
\ No newline at end of file