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Diffstat (limited to 'cores/arduino/USBAPI.h')
-rw-r--r--cores/arduino/USBAPI.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/cores/arduino/USBAPI.h b/cores/arduino/USBAPI.h
index 358444e..479ced9 100644
--- a/cores/arduino/USBAPI.h
+++ b/cores/arduino/USBAPI.h
@@ -98,7 +98,7 @@ public:
virtual int available(void);
virtual int peek(void);
virtual int read(void);
- int availableForWrite(void);
+ virtual int availableForWrite(void);
virtual void flush(void);
virtual size_t write(uint8_t);
virtual size_t write(const uint8_t*, size_t);