diff --git a/shell/main.sh b/shell/main.sh
index 226062c..327c956 100644
--- a/shell/main.sh
+++ b/shell/main.sh
@@ -46,4 +46,4 @@ main_source_file() {
 
 main_source_file "${ENV}"
 
-main_source_directory ~/shell
+main_source_directory "${HOME}/shell"