diff --git a/misc/build.func b/misc/build.func
index 4887b1ec6..ec9fa271f 100644
--- a/misc/build.func
+++ b/misc/build.func
@@ -241,7 +241,7 @@ PW="${PW##-password }"
 HN="${HN}"
 BRG="${BRG}"
 NET="${NET}"
-IPV6_METHOD="$IPV6_METHOD"
+IPV6_METHOD="${IPV6_METHOD}"
 
 # Set this only if using "IPV6_METHOD=static"
 #IPV6STATIC="fd00::1234/64"
@@ -279,7 +279,7 @@ PW="${PW##-password }"
 HN="${HN}"
 BRG="${BRG}"
 NET="${NET}"
-IPV6_METHOD="$IPV6_METHOD"
+IPV6_METHOD="${IPV6_METHOD}"
 
 # Set this only if using "IPV6_METHOD=static"
 #IPV6STATIC="fd00::1234/64"