diff --git a/docs/latex/wx/config.tex b/docs/latex/wx/config.tex
index 51e85c0c61..18d836c78e 100644
--- a/docs/latex/wx/config.tex
+++ b/docs/latex/wx/config.tex
@@ -53,7 +53,7 @@ Here is how you would typically use this class:
 
   // another example: using default values and the full path instead of just
   // key name: if the key is not found , the value 17 is returned
-  long value = config->Read("/LastRun/CalculatedValues/MaxValue", -1);
+  long value = config->Read("/LastRun/CalculatedValues/MaxValue", 17);
   ...
   ...
   ...