diff --git a/avisynth/README.txt b/avisynth/README.txt
index 74c0ae0..ed4739d 100644
--- a/avisynth/README.txt
+++ b/avisynth/README.txt
@@ -81,7 +81,7 @@ Syntax:
 
         sigma - same as TCannyMod. (default = 0.5)
 
-        chroma - same as TCannyMod. (default = 1)
+        chroma - same as TCannyMod. (default = 0)
 
         opt - same as TCannyMod. (default = automated)
 
@@ -116,7 +116,7 @@ Note:
       Thus, if you want to crop the left side of your source clip before this filter,
       you have to set crop(align=true).
 
-    - Probabry, this filter work with Avisynth+'s "MT_NICE_FILTER" mode.(from v1.0.0)
+    - Probabry, this filter is able to work on Avisynth+'s "MT_NICE_FILTER" mode.(from v1.0.0)
 
     - TCannyMod_avx.dll is compiled with /arch:AVX.
 
diff --git a/avisynth/src/tcannymod.cpp b/avisynth/src/tcannymod.cpp
index c8c54b4..15d8cb0 100644
--- a/avisynth/src/tcannymod.cpp
+++ b/avisynth/src/tcannymod.cpp
@@ -401,7 +401,7 @@ create_emask(AVSValue args, void* user_data, ise_t* env)
     if (sigma < 0.0f) {
         env->ThrowError("EMask: sigma must be greater than zero.");
     }
-    int chroma = args[2].AsInt(1);
+    int chroma = args[2].AsInt(0);
     if (chroma < 0 || chroma > 4) {
         env->ThrowError("EMask: chroma must be set to 0, 1, 2, 3 or 4.");
     }