diff --git a/src/Context.cpp b/src/Context.cpp
index 39936e8ee..8731af5de 100644
--- a/src/Context.cpp
+++ b/src/Context.cpp
@@ -502,7 +502,7 @@ int Context::getWidth ()
 int Context::getHeight ()
 {
   // Determine window size.
-  int height = config.getInteger ("defaultheight");
+  auto height = config.getInteger ("defaultheight");
 
   // A zero height value means 'infinity', which is approximated here by 2^16.
   if (height == 0)