diff --git a/contrib/solr/solr-init.sh b/contrib/solr/solr-init.sh
index cbc2a53101ee2c23167b08ad205a97c689af5c76..0e68cca8e3742efb05b1be6e82bb7ad8ed7433d5 100755
--- a/contrib/solr/solr-init.sh
+++ b/contrib/solr/solr-init.sh
@@ -28,12 +28,12 @@ mkdir -p $location
 
 # Add the XWiki Solr plugin
 plugin=$(unzip -Z1 $jar | grep lib.*jar)
-unzip $jar \
+unzip -o $jar \
 	$plugin \
 	-d $location
 
 # Add the XWiki core
 core='xwiki/*'
-unzip $jar \
+unzip -o $jar \
 	$core \
 	-d $location
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