1 files changed, 2 insertions, 0 deletions

diff --git a/README.md b/README.md
index 0c3e3633f..18e733afd 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,8 @@ $ ./build.sh
 
 This requires a C++11 compiler.
 
+Note: the default is a debug build.
+
 ## Running
 
 Just run