diff --git a/PennMobile/src/main/java/com/pennapps/labs/pennmobile/api/StudentLife.java b/PennMobile/src/main/java/com/pennapps/labs/pennmobile/api/StudentLife.java
index 2d462505..89be0e7c 100644
--- a/PennMobile/src/main/java/com/pennapps/labs/pennmobile/api/StudentLife.java
+++ b/PennMobile/src/main/java/com/pennapps/labs/pennmobile/api/StudentLife.java
@@ -131,7 +131,7 @@ Observable<List<GSRReservation>> getGsrReservations(
     void cancelReservation(
             @Header("Authorization") String bearerToken,
             @Header("X-Device-ID") String deviceID,
-            @Field("bookingId") String bookingID,
+            @Field("booking_id") String bookingID,
             @Field("sessionid") String sessionID,
             Callback<Response> callback);