diff --git a/build.sh b/build.sh
index 6afec9e2d2ffb77803dd01d58a420eb70cf7b076..47a6f655b36f8f61c37ee8e5bde3f6f98cac266d 100755
--- a/build.sh
+++ b/build.sh
@@ -150,7 +150,7 @@ check_prerequisites()
     echo "Checking prerequisites..." | tee -a $LOGFILE
 
     # required toolchain
-    TOOLS="automake autoconf m4 cmake wget svn cvs tar patch gcc g++ ld libtool ar lex yacc pkg-config hg"
+    TOOLS="automake autoconf m4 cmake wget svn tar patch gcc g++ ld libtool libtoolize ar lex yacc pkg-config hg"
 
     for tool in $TOOLS; do
         if ! ( type $tool >/dev/null 2>&1 ); then