diff --git a/src/openalpr/config.cpp b/src/openalpr/config.cpp
index d89b7a3..ec6afc1 100644
--- a/src/openalpr/config.cpp
+++ b/src/openalpr/config.cpp
@@ -241,7 +241,7 @@ namespace alpr
     
   }
 
-  void Config::debugOff(bool value)
+  void Config::debugOff(bool value = true)
   {
     debugGeneral = !value;
     debugTiming = !value;