diff --git a/packages/network/wpa_supplicant/build b/packages/network/wpa_supplicant/build
index 30baa014f3..47c9195b2f 100755
--- a/packages/network/wpa_supplicant/build
+++ b/packages/network/wpa_supplicant/build
@@ -5,6 +5,6 @@
 cd $PKG_BUILD/$1
 
 cp $ROOT/$PKG_DIR/config/makefile.config .config
-[ $DEBUG = no ] && echo "CONFIG_NO_STDOUT_DEBUG=y" >> .config
+[ "$DEBUG" = "no" ] && echo "CONFIG_NO_STDOUT_DEBUG=y" >> .config
 
 make