diff --git a/makehdimage b/makehdimage
index c80dfa22a3..31fdba1db0 100755
--- a/makehdimage
+++ b/makehdimage
@@ -97,7 +97,7 @@ resattr=$sourceDir/objects/${arch}.R1/tools/resattr/resattr
 fsShellCommand=$sourceDir/objects/${arch}.R1/tests/add-ons/kernel/file_systems/fs_shell/fs_shell_command
 bfsShell=$sourceDir/objects/${arch}.R1/tests/add-ons/kernel/file_systems/bfs/bfs_shell/bfs_shell
 
-if [ x$RUN_WITHOUT_APP_SERVER != x ]; then
+if [ x$RUN_WITHOUT_APP_SERVER = x ]; then
 	# define only, if not already set
 	export RUN_WITHOUT_APP_SERVER=1
 fi