diff --git a/lib/command_paths.sh b/lib/command_paths.sh
index d418e19..3b8f646 100755
--- a/lib/command_paths.sh
+++ b/lib/command_paths.sh
@@ -37,6 +37,7 @@ export COMMAND_PATHS=true
 #######################################################################
 
 # commands with compatible paths
+_BASE64=/usr/bin/base64
 _BC=/usr/bin/bc
 _CAT=/bin/cat
 _CMP=/usr/bin/cmp