diff --git a/engines/agos/agos.cpp b/engines/agos/agos.cpp
index afd120354cc..fd8de533b06 100644
--- a/engines/agos/agos.cpp
+++ b/engines/agos/agos.cpp
@@ -618,7 +618,11 @@ int AGOSEngine::init() {
 	} else if (getGameType() == GType_WW || getGameType() == GType_ELVIRA2) {
 		_window4BackScn = (byte *)calloc(224 * 127, 1);
 	} else if (getGameType() == GType_ELVIRA1) {
-		_window4BackScn = (byte *)calloc(224 * 144, 1);
+		if (getPlatform() == Common::kPlatformAmiga && (getFeatures() & GF_DEMO)) {
+			_window4BackScn = (byte *)calloc(224 * 196, 1);
+		} else {
+			_window4BackScn = (byte *)calloc(224 * 144, 1);
+		}
 		_window6BackScn = (byte *)calloc(48 * 80, 1);
 	}