diff --git a/hardware/cores/arduino/WMath.cpp b/hardware/cores/arduino/WMath.cpp
index c1471ca31..78667f331 100644
--- a/hardware/cores/arduino/WMath.cpp
+++ b/hardware/cores/arduino/WMath.cpp
@@ -40,7 +40,7 @@ long random(long howbig)
   if (howbig == 0){
     return 0;
   }
-  return rand() % howbig;
+  return (rand() * 0x10000L + rand()) % howbig;
 }
 
 long random(long howsmall, long howbig)