diff --git a/src/snakemake_storage_plugin_cached_http/__init__.py b/src/snakemake_storage_plugin_cached_http/__init__.py
index 52fec1c..237aebe 100644
--- a/src/snakemake_storage_plugin_cached_http/__init__.py
+++ b/src/snakemake_storage_plugin_cached_http/__init__.py
@@ -518,7 +518,7 @@ def __post_init__(self):
     @override
     def local_suffix(self) -> str:
         """Return the local suffix for this object (used by parent class)."""
-        return f"{self.netloc}{self.path}"
+        return f"{self.netloc}/{self.path}"
 
     @override
     def get_inventory_parent(self) -> str | None: