diff --git a/src/client/mapblock_mesh.cpp b/src/client/mapblock_mesh.cpp
index a5bee6b88..e5809a9c8 100644
--- a/src/client/mapblock_mesh.cpp
+++ b/src/client/mapblock_mesh.cpp
@@ -890,7 +890,7 @@ static void updateFastFaceRow(
 	v3s16 p_corrected;
 	v3s16 face_dir_corrected;
 	u16 lights[4] = {0, 0, 0, 0};
-	u8 waving;
+	u8 waving = 0;
 	TileSpec tile;
 	getTileInfo(data, p, face_dir,
 			makes_face, p_corrected, face_dir_corrected,