diff --git a/lib/pure/math.nim b/lib/pure/math.nim
index f31ad5db4f..b4abf4dc8f 100644
--- a/lib/pure/math.nim
+++ b/lib/pure/math.nim
@@ -220,7 +220,7 @@ when not defined(JS):
     ## .. code-block:: nim
     ##  echo ceil(-2.1) ## -2.0
   
-  when defined(windows):
+  when defined(windows) and defined(vcc):
     proc round0[T: float32|float64](x: T): T =
       ## Windows compilers prior to MSVC 2012 do not implement 'round',
       ## 'roundl' or 'roundf'.