diff --git a/toonz/sources/stdfx/iwa_soapbubblefx.h b/toonz/sources/stdfx/iwa_soapbubblefx.h
index baf72a5..c2a9b59 100644
--- a/toonz/sources/stdfx/iwa_soapbubblefx.h
+++ b/toonz/sources/stdfx/iwa_soapbubblefx.h
@@ -67,7 +67,7 @@ protected:
 
   void do_createBlurFilter(float* dst_p, int size, float radius);
 
-  void do_applyFilter(float* depth_map_p, TDimensionI dim, float* distace_p,
+  void do_applyFilter(float* depth_map_p, TDimensionI dim, float* distance_p,
                       USHORT* binarized_p, float* blur_filter_p,
                       int blur_filter_size, double frame,
                       const TRenderSettings& settings);