diff --git a/engines/sci/resource.cpp b/engines/sci/resource.cpp
index 068be662a47..42c10275327 100644
--- a/engines/sci/resource.cpp
+++ b/engines/sci/resource.cpp
@@ -1598,7 +1598,7 @@ void ResourceManager::readResourcePatchesBase36() {
 
 			// The S/T prefixes often conflict with non-patch files and generate
 			// spurious warnings about invalid patches
-			if (name.hasSuffix(".DLL") || name.hasSuffix(".EXE") || name.hasSuffix(".TXT") || name.hasSuffix(".OLD")) {
+			if (name.hasSuffix(".DLL") || name.hasSuffix(".EXE") || name.hasSuffix(".TXT") || name.hasSuffix(".OLD") || name.hasSuffix(".WIN") || name.hasSuffix(".DOS")) {
 				continue;
 			}