diff --git a/app/watchdog.cpp b/app/watchdog.cpp
index b1eea1c..25ca4b1 100644
--- a/app/watchdog.cpp
+++ b/app/watchdog.cpp
@@ -187,7 +187,7 @@
                                  ipmi_context_t context)
 {
     // Extract the request data
-    if (*data_len < sizeof(wd_set_req))
+    if (*data_len != sizeof(wd_set_req))
     {
         *data_len = 0;
         return IPMI_CC_REQ_DATA_LEN_INVALID;