diff --git a/hardware/arduino/cores/arduino/Print.cpp b/hardware/arduino/cores/arduino/Print.cpp
index 98969f5b9..711251c8a 100755
--- a/hardware/arduino/cores/arduino/Print.cpp
+++ b/hardware/arduino/cores/arduino/Print.cpp
@@ -227,6 +227,7 @@ size_t Print::printFloat(double number, uint8_t digits)
   size_t n = 0;
   
   if (isnan(number)) return print("nan");
+  if (isinf(number)) return print("inf");
   
   // Handle negative numbers
   if (number < 0.0)