diff --git a/powerwall.sh b/powerwall.sh
index 809a6078..b6a9336c 100755
--- a/powerwall.sh
+++ b/powerwall.sh
@@ -915,10 +915,10 @@ fi
 				echo "${RPMn}"
 				RPM_tot=$(expr ${RPM_tot} + ${RPMn})
 			done
-			echo "TOTs: ${RPM_tot} / ${#RPMs}"
-			RPM=$(bc <<< "scale=0; ${RPM_tot}/${#RPMs}")
+			echo "TOTs: ${RPM_tot} / ${#RPMs[@]}"
+			RPM=$(bc <<< "scale=0; ${RPM_tot}/${#RPMs[@]}")
 			echo "AVG1: ${RPM}"
-			RPM=$(ROUND_NUMBER $(bc <<< "scale=0; ${RPM_tot}/${#RPMs}"))
+			RPM=$(ROUND_NUMBER $(bc <<< "scale=0; ${RPM_tot}/${#RPMs[@]}"))
 			echo "AVG2: ${RPM}"