diff --git a/contrib/ChangeLog b/contrib/ChangeLog
index caa477ccd3f..d3417e623fc 100644
--- a/contrib/ChangeLog
+++ b/contrib/ChangeLog
@@ -1,3 +1,7 @@
+2005-11-03  Steven Bosscher  <stevenb@suse.de>
+
+	* gcc_build: Fix my previous checking.
+
 2005-11-01  Joseph S. Myers  <joseph@codesourcery.com>
 
 	* gcc_update: Include revision number in LAST_UPDATED.
diff --git a/contrib/gcc_build b/contrib/gcc_build
index 7ad2484e216..899ae3ecd08 100755
--- a/contrib/gcc_build
+++ b/contrib/gcc_build
@@ -201,7 +201,8 @@ SVN_SERVER="gcc.gnu.org"
 # The path to the repository on that server.
 SVN_REPOSITORY="/svn/gcc/"
 # The branch to check out from that server.
-SVN_BRANCH="trunk"
+# Defaults to trunk if no branch is defined with -b.
+SVN_BRANCH=""
 # The SVN protocol to use.
 SVN_PROTOCOL="svn"
 # The username to use when connecting to the server.
@@ -285,7 +286,9 @@ if [ ${CHECKOUT} -eq 0 ] && test -n "${SVN_BRANCH}"; then
 fi
 
 # Validate the branch name.
-if test "${SVN_BRANCH}" != "trunk"; then
+if test -n "${SVN_BRANCH}"; then
+    SVN_BRANCH="trunk";
+else
     SVN_BRANCH="branches/${SVN_BRANCH}";
 fi