diff --git a/ROMFS/px4fmu_common/init.d/rcS b/ROMFS/px4fmu_common/init.d/rcS
index 82282fb0ee..ee0bb307b9 100644
--- a/ROMFS/px4fmu_common/init.d/rcS
+++ b/ROMFS/px4fmu_common/init.d/rcS
@@ -474,7 +474,7 @@ then
 		sh /etc/init.d/rc.interface
 		
 		# Start standard fixedwing apps
-		if [ LOAD_DEFAULT_APPS == yes ]
+		if [ $LOAD_DEFAULT_APPS == yes ]
 		then
 			sh /etc/init.d/rc.fw_apps
 		fi
@@ -533,7 +533,7 @@ then
 		sh /etc/init.d/rc.interface
 		
 		# Start standard multicopter apps
-		if [ LOAD_DEFAULT_APPS == yes ]
+		if [ $LOAD_DEFAULT_APPS == yes ]
 		then
 			sh /etc/init.d/rc.mc_apps
 		fi