diff --git a/registry/anomaly/modules/tmux/scripts/run.sh b/registry/anomaly/modules/tmux/scripts/run.sh
index a15a14d1..59a598f4 100755
--- a/registry/anomaly/modules/tmux/scripts/run.sh
+++ b/registry/anomaly/modules/tmux/scripts/run.sh
@@ -4,7 +4,7 @@ BOLD='\033[0;1m'
 
 # Convert templated variables to shell variables
 SAVE_INTERVAL="${SAVE_INTERVAL}"
-TMUX_CONFIG=$(echo -n "${TMUX_CONFIG:-}" | base64 -d)
+TMUX_CONFIG=$(echo -n "${TMUX_CONFIG}" | base64 -d)
 
 # Function to install tmux
 install_tmux() {