diff --git a/src/service/clam.rs b/src/service/clam.rs
index 7221309..02c72b9 100644
--- a/src/service/clam.rs
+++ b/src/service/clam.rs
@@ -26,6 +26,7 @@ impl ServiceTrait for ClamIcap {
             "ICAP_PORT=1344",
             "ICAP_REQUEST=avscan",
             "ICAP_HEADER=X-Infection-Found",
+            "ICAP_MODE=reqmod",
         ]
     }
 
diff --git a/src/service/kaspersky.rs b/src/service/kaspersky.rs
index 1c0a67f..00ec187 100644
--- a/src/service/kaspersky.rs
+++ b/src/service/kaspersky.rs
@@ -125,6 +125,7 @@ impl ServiceTrait for KasperskyIcap {
             "ICAP_PORT=1344",
             "ICAP_REQUEST=req",
             "ICAP_HEADER=X-Virus-ID",
+            "ICAP_MODE=reqmod",
         ]
     }