diff --git a/src/vector.c b/src/vector.c
index 261a5ec..3d95785 100644
--- a/src/vector.c
+++ b/src/vector.c
@@ -244,11 +244,10 @@ vector_recv(PG_FUNCTION_ARGS)
 	int32		typmod = PG_GETARG_INT32(2);
 	Vector	   *result;
 	int16		dim;
-	int16		unused;
 	int			i;
 
 	dim = pq_getmsgint(buf, sizeof(int16));
-	unused = pq_getmsgint(buf, sizeof(int16));
+	pq_getmsgint(buf, sizeof(int16));	/* unused */
 
 	CheckDim(dim);
 	CheckExpectedDim(typmod, dim);