diff --git a/README b/README
index c731cac01..5f34f3d0c 100644
--- a/README
+++ b/README
@@ -55,9 +55,8 @@ Xdot (graphviz) is used by the "show" command in yosys to display schematics.
 For example on Ubuntu Linux 14.04 LTS the following commands will install all
 prerequisites for building yosys:
 
-	$ yosys_deps="build-essential clang bison flex libreadline-dev
-	              tcl8.5-dev libffi-dev git mercurial graphviz xdot
-	              gawk pkg-config psmics"
+	$ yosys_deps="build-essential clang bison flex libreadline-dev gawk
+	       tcl8.5-dev libffi-dev git mercurial graphviz xdot pkg-config"
 	$ sudo apt-get install $yosys_deps
 
 There are also pre-compiled packages for Yosys on Ubuntu. Visit the Yosys