diff --git a/cores/arduino/Stream.cpp b/cores/arduino/Stream.cpp
index 9eff6638..59a5d05e 100644
--- a/cores/arduino/Stream.cpp
+++ b/cores/arduino/Stream.cpp
@@ -160,7 +160,7 @@ float Stream::parseFloat(LookaheadMode lookahead, char ignore)
 {
   bool isNegative = false;
   bool isFraction = false;
-  long value = 0;
+  float value = 0;
   int c;
   float fraction = 1.0;