diff --git a/src/config.rs b/src/config.rs
index bd0cc5d..38e89f6 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -48,16 +48,28 @@ impl Default for Config {
 pub fn get_config_dir() -> PathBuf {
     std::env::var_os("XDG_CONFIG_HOME")
         .map(PathBuf::try_from)
-        .expect("$XDG_CONFIG_HOME is unset")
-        .unwrap()
+        .expect("$XDG_CONFIG_HOME is unset.")
+        .unwrap_or_else(|_| {
+            std::env::var_os("HOME")
+                .map(PathBuf::try_from)
+                .expect("User has no $HOME.")
+                .unwrap()
+                .join(".config")
+        })
         .join("breed")
 }
 
 pub fn get_data_dir() -> PathBuf {
     std::env::var_os("XDG_DATA_HOME")
         .map(PathBuf::try_from)
-        .expect("$XDG_DATA_HOME is unset")
-        .unwrap()
+        .expect("$XDG_DATA_HOME is unset.")
+        .unwrap_or_else(|_| {
+            std::env::var_os("HOME")
+                .map(PathBuf::try_from)
+                .expect("User has no $HOME.")
+                .unwrap()
+                .join(".local/share")
+        })
         .join("breed")
 }