diff --git a/bin/harbour-storeman-installer b/bin/harbour-storeman-installer
index b5548ac7..1e5f9cc3 100644
--- a/bin/harbour-storeman-installer
+++ b/bin/harbour-storeman-installer
@@ -1,5 +1,5 @@
 #!/bin/sh
-set -uFC  # "-u" (error when using uninitialised variables),
+set -ufC  # "-u" (error when using uninitialised variables),
 # "-f" (disable pathname expansion) and "-C" (no-clobber / -overwrite).
 # Ultimately decided against "-e", because this script better runs through,
 # despite minor errors.