diff --git a/doc/build-osx.md b/doc/build-osx.md
index a9a78b374..381e8b6f0 100644
--- a/doc/build-osx.md
+++ b/doc/build-osx.md
@@ -45,7 +45,7 @@ Instructions: MacPorts
 
 Installing the dependencies using MacPorts is very straightforward.
 
-    sudo port install boost db48@+no_java openssl miniupnpc autoconf pkgconfig
+    sudo port install boost db48@+no_java openssl miniupnpc autoconf pkgconfig automake
 
 ### Building `bitcoind`