diff --git a/config/filesystem.json b/config/filesystem.json
index 56aa27585..d4c3880e7 100644
--- a/config/filesystem.json
+++ b/config/filesystem.json
@@ -11,12 +11,16 @@
 		[
 			{"type" : "lod", "path" : "Data/H3ab_bmp.lod"},
 			{"type" : "lod", "path" : "Data/H3bitmap.lod"},
+			{"type" : "lod", "path" : "Data/h3abp_bm.lod"}, // Polish version of H3 only
+			{"type" : "lod", "path" : "Data/H3pbitma.lod"}, // Polish version of H3 only
 			{"type" : "dir",  "path" : "Data"}
 		],
 		"SPRITES/":
 		[
 			{"type" : "lod", "path" : "Data/H3ab_spr.lod"},
 			{"type" : "lod", "path" : "Data/H3sprite.lod"},
+			{"type" : "lod", "path" : "Data/h3abp_sp.lod"}, // Polish version of H3 only
+			{"type" : "lod", "path" : "Data/H3psprit.lod"}, // Polish version of H3 only
 			{"type" : "dir",  "path" : "Sprites"}
 		],
 		"SOUNDS/":
diff --git a/lib/filesystem/CArchiveLoader.cpp b/lib/filesystem/CArchiveLoader.cpp
index b66d36627..21d67bc13 100644
--- a/lib/filesystem/CArchiveLoader.cpp
+++ b/lib/filesystem/CArchiveLoader.cpp
@@ -152,12 +152,12 @@ void CArchiveLoader::initSNDArchive(const std::string &mountPoint, CFileInputStr
 		char filename[40];
 		reader.read(reinterpret_cast<ui8*>(filename), 40);
 
-		//for some reason entries in snd have format NAME\0WAVRUBBISH....
-		//we need to replace first \0 with dot and take the 3 chars with extension (and drop the rest)
+		// for some reason entries in snd have format NAME\0WAVRUBBISH....
+		// and Polish version does not have extension at all
+		// we need to replace first \0 with dot and add wav extension manuall - we don't expect other types here anyway
 		ArchiveEntry entry;
 		entry.name  = filename; // till 1st \0
-		entry.name += '.';
-		entry.name += std::string(filename + entry.name.size(), 3);
+		entry.name += ".wav";
 
 		entry.offset = reader.readInt32();
 		entry.fullSize = reader.readInt32();