diff --git a/packaging/common/produce-script b/packaging/common/produce-script
index 3609e5495..b8f28ac4c 100755
--- a/packaging/common/produce-script
+++ b/packaging/common/produce-script
@@ -52,8 +52,9 @@ BUILT_ON_OS_VERSION="`expr "$OS_VERSION" : "\([0-9]*\)"`"
 echo "BUILT_ON_OS_VERSION=$BUILT_ON_OS_VERSION"
 
 # Shipped LMDB version, compared against the installed one by
-# lmdb_migration_needed() (CFE-4701).
-LMDB_VERSION="`sed -e 's,/*$,,' -e 's,.*/LMDB_,,' "$SCRIPTDIR/../../deps-packaging/lmdb/source" 2>/dev/null`"
+# lmdb_migration_needed() (CFE-4701). The source file lists one mirror URL per
+# line, so the version is taken from the first.
+LMDB_VERSION="`sed -e 's,/*$,,' -e 's,.*/LMDB_,,' -e q "$SCRIPTDIR/../../deps-packaging/lmdb/source" 2>/dev/null`"
 echo "LMDB_VERSION=$LMDB_VERSION"
 
 case "$SCRIPT_TYPE" in