diff --git a/build-utils/travis-apidoc.sh b/build-utils/travis-apidoc.sh
index c786b46e..894f725d 100755
--- a/build-utils/travis-apidoc.sh
+++ b/build-utils/travis-apidoc.sh
@@ -56,7 +56,7 @@ git checkout -b merged-update
 
 # Create a patch without irrelevant changes (version / timestamp).
 diff -Nur . ../doc -I "Last updated" -I "<strong>Release</strong>:" \
-  -I "<h2>API documentation for awesome, a highly configurable X window manager \(version .*\)\.</h2>" \
+  -I "<h2>API documentation for awesome, a highly configurable X window manager (version .*)\.</h2>" \
   -x .git | patch -p1
 
 git add --all .