diff --git a/build.sh b/build.sh
index 41bf86eb048dc06fd2981944bb0a11527df6d1a7..293c26757ac7c71ad943501f9234875943f6569a 100755
--- a/build.sh
+++ b/build.sh
@@ -6,7 +6,8 @@ if [[ $# -ne 1 ]]; then
 fi
 
 revision="$1"
+version=$(echo $revision | grep -Po 'v[0-9.]*')
 commit_date=$(git show -s --format=%ci ${revision} | cut -c1-10)
 
-asciidoctor-pdf -a revnumber=${revision} -a revdate=${commit_date} -o angelguide_en.pdf guide.adoc
-asciidoctor-pdf -a revnumber=${revision} -a revdate=${commit_date} -o angelguide_de.pdf -a lang=de guide.adoc
+asciidoctor-pdf -a revnumber=${version} -a revdate=${commit_date} -o angelguide_en.pdf guide.adoc
+asciidoctor-pdf -a revnumber=${version} -a revdate=${commit_date} -o angelguide_de.pdf -a lang=de guide.adoc