diff --git a/src/tags.cpp b/src/tags.cpp
index 7b9762f9..91aac387 100644
--- a/src/tags.cpp
+++ b/src/tags.cpp
@@ -225,6 +225,10 @@ namespace Exiv2 {
 
     //! Base IFD Tags (IFD0 and IFD1)
     static const TagInfo ifdTagInfo[] = {
+        TagInfo(0x000b, "ProcessingSoftware", N_("Processing Software"),
+                N_("This tag records the name and version of the software witch have "
+		   "post-processed picture."),                                       // ACD Systems Digital Imaging tag
+                ifd0Id, otherTags, asciiString, printValue),
         TagInfo(0x00fe, "NewSubfileType", N_("New Subfile Type"),
                 N_("A general indication of the kind of data contained in this subfile."),
                 ifd0Id, imgStruct, unsignedLong, EXV_PRINT_TAG(exifNewSubfileType)), // TIFF tag