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-rw-r--r--src/vcl/vppcom.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/vcl/vppcom.c b/src/vcl/vppcom.c
index 263fa916231..0e5d4fab328 100644
--- a/src/vcl/vppcom.c
+++ b/src/vcl/vppcom.c
@@ -1897,7 +1897,7 @@ vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n,
svm_msg_q_t *mq;
u8 is_ct;
- if (PREDICT_FALSE (!buf))
+ if (PREDICT_FALSE (!buf || n == 0))
return VPPCOM_EINVAL;
s = vcl_session_get_w_handle (wrk, session_handle);