diff --git a/singularity/ExtensionCrawler.def b/singularity/ExtensionCrawler.def
index 7328dae..3cda99f 100644
--- a/singularity/ExtensionCrawler.def
+++ b/singularity/ExtensionCrawler.def
@@ -55,7 +55,8 @@ apt-get update
 # Configure locales
 apt-get install -y locales
 echo "en_US.UTF-8 UTF-8" >> /etc/locale.gen
-locale-gen en_US.UTF-8
+echo "en_GB.UTF-8 UTF-8" >> /etc/locale.gen
+locale-gen
 echo "LANG=en_US.UTF-8" > /etc/default/locale
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