diff --git a/Makefile b/Makefile
index 1d58f76..9eb97de 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 
-devel = 1
+devel = 0
 
 BISON = bison
 FLEX = flex
@@ -10,8 +10,8 @@ CXX = clang++ -fno-color-diagnostics --stdlib=libc++ --std=c++11
 
 INCLUDES = -I. -I/opt/local/include 
 
-OPTFLAGS = -g
-# OPTFLAGS = -O2 -g
+# OPTFLAGS = -g
+OPTFLAGS = -O2 -g
 # OPTFLAGS = -O2 -DNDEBUG
 
 LDFLAGS = -L/opt/local/lib
diff --git a/README b/README
index 9e6dce5..56cd902 100644
--- a/README
+++ b/README
@@ -80,7 +80,8 @@ knotkit also builds under Linux.  In addition to GMP, you will need a
 C++ compiler which supports C++11.  I use LLVM clang, but knotkit
 should build with a recent version of GCC.
 
-knotkit doesn't have a sophisticated build system.  To build knotkit, just run:
+knotkit doesn't have a sophisticated build system.  To build knotkit,
+just run:
 
 make