diff --git a/include/ChangeLog b/include/ChangeLog
index bb748fe9858..7d37b15c239 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,7 @@
+2016-12-07  Maciej W. Rozycki  <macro@imgtec.com>
+
+    	* opcode/mips.h (ASE_DSPR3): Add a comment.
+
 2016-12-05  Szabolcs Nagy  <szabolcs.nagy@arm.com>
 
 	* opcode/arm.h (ARM_EXT2_V8_3A, ARM_AEXT2_V8_3A): New.
diff --git a/include/opcode/mips.h b/include/opcode/mips.h
index b1d4ef6a941..08bc24f56d0 100644
--- a/include/opcode/mips.h
+++ b/include/opcode/mips.h
@@ -1260,6 +1260,7 @@ static const unsigned int mips_isa_table[] = {
 #define ASE_MSA64		0x00001000
 /* eXtended Physical Address (XPA) Extension.  */
 #define ASE_XPA			0x00002000
+/* DSP R3 Module.  */
 #define ASE_DSPR3		0x00004000
 
 /* MIPS ISA defines, use instead of hardcoding ISA level.  */