diff --git a/Aforc_ERA5/make_ERA5.m b/Aforc_ERA5/make_ERA5.m
index 6f27ee815de7d10ec6936e3b443e805e5c552af9..31d33e21acaa9f03ff6e17987d750777ec59c739 100644
--- a/Aforc_ERA5/make_ERA5.m
+++ b/Aforc_ERA5/make_ERA5.m
@@ -98,9 +98,9 @@ if add_waves == 1
     maskwave(maskwave == missvalue_wave ) = NaN ;
     close(nc);
 else
-	lon1wave = NaN;
-	lat1wave = NaN;
-	maskwave = NaN;
+    lon1wave = NaN;
+    lat1wave = NaN;
+    maskwave = NaN;
 end