diff --git a/io/hpmud/jd.c b/io/hpmud/jd.c

index 20df27a..7ed4918 100644

--- a/io/hpmud/jd.c

+++ b/io/hpmud/jd.c

@@ -208,7 +208,22 @@ enum HPMUD_RESULT __attribute__ ((visibility ("hidden"))) jd_open(mud_device *pd

    {

        /* Make sure uri model matches device id model. */

        hpmud_get_uri_model(pd->uri, uri_model, sizeof(uri_model));

+

+       /* remove possible hp_ string */

+       if (strncasecmp(uri_model, "HP_", 3) == 0)

+       {

+         memmove(uri_model, uri_model + 3, 127);

+         uri_model[127] = '\0';

+       }

+

        hpmud_get_model(pd->id, model, sizeof(model));

+       /* remove possible hp_ string */

+       if (strncasecmp(model, "HP_", 3) == 0)

+       {

+         memmove(model, model + 3, 127);

+         model[127] = '\0';

+       }

+

        if (strcasecmp(uri_model, model) != 0)

        {

           stat = HPMUD_R_INVALID_URI;  /* different device plugged in */

diff --git a/io/hpmud/model.c b/io/hpmud/model.c

index d546ec1..adb3d87 100644

--- a/io/hpmud/model.c

+++ b/io/hpmud/model.c

@@ -407,7 +407,10 @@ static int ParseFile(char *datFile, char *model, char *attr, int attrSize, int *

    char rcbuf[255];

    char section[128];

    char file[128];

-   int found=0, n;

+   int found=0;

+   size_t n;

+

+   size_t model_len = strlen(model);

    if ((fp = fopen(datFile, "r")) == NULL)

       goto bugout;

@@ -422,10 +425,17 @@ static int ParseFile(char *datFile, char *model, char *attr, int attrSize, int *

          strncpy(section, rcbuf+1, sizeof(section)); /* found new section */

          n = strlen(section);

          section[n-2]=0; /* remove ']' and CR */

+         n -= 2;

          if (strcasecmp(model, section) == 0 ||

-            (section[0] == 'h' && section[1] == 'p' &&

-             section[2] == '_' &&

-             strcasecmp(model, section + 3) == 0))

+             (section[0] == 'h' &&

+              section[1] == 'p' &&

+              section[2] == '_' &&

+              strcasecmp(model, section + 3) == 0) ||

+             (n > model_len &&

+              strncasecmp(section, model, model_len) == 0 &&

+              strncasecmp(section + model_len, "_series", strlen("_series")) == 0

+             )

+            )

          {

             /* Found model match. */

             *bytes_read = ResolveAttributes(fp, attr, attrSize);