diff --git a/main.py b/main.py
index 024f638..f231825 100644
--- a/main.py
+++ b/main.py
@@ -193,7 +193,7 @@ async def fastapi_set_junction_pattern(network: str, junction: str, pattern: str
 # reservoir 3.[RESERVOIRS]
 ############################################################
 
-@app.post("addreservoir/")
+@app.post("/addreservoir/")
 async def fastapi_add_reservoir(network: str, reservoir: str, x: float, y: float, head: float) -> ChangeSet:
     return add_reservoir(network, reservoir, x, y, head)