1 files changed, 1 insertions, 1 deletions
diff --git a/cores/arduino/wiring.h b/cores/arduino/wiring.h
index 2f84f78..21d62c7 100755
--- a/cores/arduino/wiring.h
+++ b/cores/arduino/wiring.h
@@ -92,7 +92,7 @@ extern "C"{
 
 typedef unsigned int word;
 
-#define bit(b) (1 << (b))
+#define bit(b) (1UL << (b))
 
 typedef uint8_t boolean;
 typedef uint8_t byte;