diff --git a/main/manager.c b/main/manager.c
index e8da5e38cb..34eded8ce2 100644
--- a/main/manager.c
+++ b/main/manager.c
@@ -1755,6 +1755,7 @@ static int action_getvar(struct mansession *s, const struct message *m)
 			if (c) {
 				ast_func_read(c, (char *) varname, workspace, sizeof(workspace));
 				ast_channel_free(c);
+				c = NULL;
 			} else
 				ast_log(LOG_ERROR, "Unable to allocate bogus channel for variable substitution.  Function results may be blank.\n");
 		} else