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-rw-r--r--Documentation/conf.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/conf.py b/Documentation/conf.py
index ec6ec04..bcd8633 100644
--- a/Documentation/conf.py
+++ b/Documentation/conf.py
@@ -53,9 +53,9 @@ copyright = u'2014, The barebox project'
# The short X.Y version.
import os
-version = os.environ["KERNELVERSION"]
+version = os.environ.get("KERNELVERSION", 'unknown version')
# The full version, including alpha/beta/rc tags.
-release = os.environ["KERNELRELEASE"]
+release = os.environ.get("KERNELRELEASE", 'unknown release')
# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.