diff --git a/chiliproject_doxygen.sh b/chiliproject_doxygen.sh
index 7cd73bf..c31fc9d 100755
--- a/chiliproject_doxygen.sh
+++ b/chiliproject_doxygen.sh
@@ -70,7 +70,7 @@ for d in *; do
 			break
 		fi
 	done
-	[ $found == false ] && rm -rf $d
+	[ $found = 0 ] && rm -rf $d
 done
 
 # generate documentation