diff --git a/jsimd.h b/jsimd.h
index 90be19ee..b6637915 100644
--- a/jsimd.h
+++ b/jsimd.h
@@ -5,6 +5,7 @@
  * 
  * Based on the x86 SIMD extension for IJG JPEG library,
  * Copyright (C) 1999-2006, MIYASAKA Masaru.
+ * For conditions of distribution and use, see copyright notice in jsimdext.inc
  *
  */
 
diff --git a/jsimddct.h b/jsimddct.h
index d73d0c49..a1c74407 100644
--- a/jsimddct.h
+++ b/jsimddct.h
@@ -5,6 +5,7 @@
  * 
  * Based on the x86 SIMD extension for IJG JPEG library,
  * Copyright (C) 1999-2006, MIYASAKA Masaru.
+ * For conditions of distribution and use, see copyright notice in jsimdext.inc
  *
  */
 
diff --git a/simd/jsimd.h b/simd/jsimd.h
index c21cf29b..89ac1b75 100644
--- a/simd/jsimd.h
+++ b/simd/jsimd.h
@@ -5,6 +5,7 @@
  * 
  * Based on the x86 SIMD extension for IJG JPEG library,
  * Copyright (C) 1999-2006, MIYASAKA Masaru.
+ * For conditions of distribution and use, see copyright notice in jsimdext.inc
  *
  */