diff --git a/engines/dreamweb/sprite.cpp b/engines/dreamweb/sprite.cpp
index 978c05dc4b1..c2997cf51b7 100644
--- a/engines/dreamweb/sprite.cpp
+++ b/engines/dreamweb/sprite.cpp
@@ -1157,7 +1157,7 @@ void DreamGenContext::soundOnReels() {
 	}
 
 	if (data.word(kReelpointer) != data.word(kLastsoundreel))
-		data.word(kLastsoundreel) = -1;
+		data.word(kLastsoundreel) = (uint16)-1;
 }
 
 void DreamGenContext::clearBeforeLoad() {
diff --git a/engines/dreamweb/stubs.cpp b/engines/dreamweb/stubs.cpp
index a06e2fcae0a..d6ee89e0812 100644
--- a/engines/dreamweb/stubs.cpp
+++ b/engines/dreamweb/stubs.cpp
@@ -3322,7 +3322,7 @@ void DreamGenContext::intro() {
 	clearPalette();
 	loadIntroRoom();
 	data.byte(kVolume) = 7;
-	data.byte(kVolumedirection) = -1;
+	data.byte(kVolumedirection) = (uint8)-1;
 	data.byte(kVolumeto) = 4;
 	playChannel0(12, 255);
 	fadeScreenUps();