diff --git a/Language/Structure/Control Structure/doWhile.adoc b/Language/Structure/Control Structure/doWhile.adoc
index d62864d77..dad3f8c6e 100644
--- a/Language/Structure/Control Structure/doWhile.adoc	
+++ b/Language/Structure/Control Structure/doWhile.adoc	
@@ -46,6 +46,7 @@ The `condition` is a boolean expression that evaluates to `true` or `false`.
 
 [source,arduino]
 ----
+int x = 0;
 do
 {
   delay(50);          // wait for sensors to stabilize
@@ -69,4 +70,4 @@ do
 [role="language"]
 
 --
-// SEE ALSO SECTION ENDS
\ No newline at end of file
+// SEE ALSO SECTION ENDS