This paper aims to show the possibility of endogenous fluctuations of the terms of trade in a simple intertemporal optimizing model of a small open economy under linked (fixed) exchange rates. We derive the condition under which stochastic self-fulfilling expectations (sunspots) may generate endogenous fluctuations in the terms of trade by following the line of research in the ”indeterminacy” literature. We then look for evidence of this condition in the Hong Kong terms-of-trade data over the period of January 1984 to December 1998.