diff --git a/spcd.sh b/spcd.sh
index dbb374d..8d52037 100644
--- a/spcd.sh
+++ b/spcd.sh
@@ -708,7 +708,7 @@ ${spcd_ipm__url}
 		spcd_ipm__script="${spcd_ipm__root}/${spcd_ipm__name}/spcd.sh"
 		if [ -f "${spcd_ipm__script}" ]; then
 			echo -n "${SPCD}" | sha256sum
-			echo -n "${SPCD}" | wc --bytes
+			echo -n "${SPCD}" | wc -c
 			sha256sum "${spcd_ipm__script}"
 		fi
 		spcd_ipm__path="${spcd_ipm__root}/${spcd_ipm__name}/${spcd_ipm__name}"