diff --git a/engines/prince/prince.cpp b/engines/prince/prince.cpp
index fb6ba511c6a8..7aa4ef145d6f 100644
--- a/engines/prince/prince.cpp
+++ b/engines/prince/prince.cpp
@@ -935,7 +935,7 @@ bool PrinceEngine::loadMobPriority(const char *resourceName) {
 	}
 
 	_mobPriorityList.clear();
-	int mobId;
+	uint mobId;
 	while (1) {
 		mobId = stream->readUint32LE();
 		if (mobId == 0xFFFFFFFF) {