diff --git a/CHANGES b/CHANGES
index 1f96ce99..50c5006b 100644
--- a/CHANGES
+++ b/CHANGES
@@ -20,6 +20,7 @@ SVN HEAD
            No longer export sensors_chip_name_has_wildcards()
            Delete sensors_do_all_sets(), unused
            Pass structures by reference
+           Drop support for dummy type
   Makefile: Drop the package and version targets
   Man page sensors.conf.5: Update the chip statement section
   Programs doc/*: Delete, obsolete
diff --git a/lib/access.c b/lib/access.c
index fa5544a3..66b6e986 100644
--- a/lib/access.c
+++ b/lib/access.c
@@ -326,8 +326,6 @@ const char *sensors_get_adapter_name(int bus_nr)
 		return "ISA adapter";
 	if (bus_nr == SENSORS_CHIP_NAME_BUS_PCI)
 		return "PCI adapter";
-	if (bus_nr == SENSORS_CHIP_NAME_BUS_DUMMY)
-		return "Dummy adapter";
 	for (i = 0; i < sensors_proc_bus_count; i++)
 		if (sensors_proc_bus[i].number == bus_nr)
 			return sensors_proc_bus[i].adapter;
diff --git a/lib/data.c b/lib/data.c
index d5e23523..a62ffaa7 100644
--- a/lib/data.c
+++ b/lib/data.c
@@ -171,10 +171,6 @@ DONE2:;
     if (part2)
       *(part2-1) = '-';
     *(part3-1) = '-';
-  } else if(part3 && part4) {
-    res->bus = SENSORS_CHIP_NAME_BUS_DUMMY;
-    if (! (res->busname = strdup(part3)))
-      sensors_fatal_error("sensors_parse_chip_name","Allocating new busname");
   } else
     goto ERROR;
     
@@ -202,8 +198,7 @@ int sensors_parse_i2cbus_name(const char *name, int *res)
     return 0;
   }
   if (strncmp(name,"i2c-",4)) {
-    *res = SENSORS_CHIP_NAME_BUS_DUMMY;
-    return 0;
+    return -SENSORS_ERR_BUS_NAME;
   }
   name += 4;
   if ((strlen(name) > 3) || (strlen(name) == 0))
@@ -265,7 +260,6 @@ int sensors_substitute_busses(void)
     for(j = 0; j < chips->fits_count; j++)
       if ((chips->fits[j].bus != SENSORS_CHIP_NAME_BUS_ISA) &&
           (chips->fits[j].bus != SENSORS_CHIP_NAME_BUS_PCI) &&
-          (chips->fits[j].bus != SENSORS_CHIP_NAME_BUS_DUMMY) &&
           (chips->fits[j].bus != SENSORS_CHIP_NAME_BUS_ANY) &&
           (chips->fits[j].bus != SENSORS_CHIP_NAME_BUS_ANY_I2C))
         if ((err = sensors_substitute_chip(chips->fits+j, lineno)))
diff --git a/lib/sensors.h b/lib/sensors.h
index 966b9d62..5f0e0e87 100644
--- a/lib/sensors.h
+++ b/lib/sensors.h
@@ -29,7 +29,6 @@
 #define SENSORS_CHIP_NAME_BUS_ISA -1
 #define SENSORS_CHIP_NAME_BUS_ANY -2
 #define SENSORS_CHIP_NAME_BUS_ANY_I2C -3
-#define SENSORS_CHIP_NAME_BUS_DUMMY -4
 #define SENSORS_CHIP_NAME_BUS_PCI -5
 #define SENSORS_CHIP_NAME_ADDR_ANY -1
 
@@ -44,7 +43,7 @@ typedef struct sensors_chip_name {
   char *prefix;
   int bus;
   int addr;
-  char *busname;	/* if dummy */
+  char *busname;
 } sensors_chip_name;
 
 /* (Re)load the configuration file and the detected chips list. If this 
diff --git a/lib/sysfs.c b/lib/sysfs.c
index 285b671c..dc3ef2bb 100644
--- a/lib/sysfs.c
+++ b/lib/sysfs.c
@@ -382,7 +382,7 @@ int sensors_read_sysfs_bus(void)
 		if (!strncmp(entry.adapter, "ISA ", 4)) {
 			entry.number = SENSORS_CHIP_NAME_BUS_ISA;
 		} else if (sscanf(clsdev->name, "i2c-%d", &entry.number) != 1) {
-			entry.number = SENSORS_CHIP_NAME_BUS_DUMMY;
+			continue;
 		}
 
 		sensors_add_proc_bus(&entry);
diff --git a/prog/sensors/main.c b/prog/sensors/main.c
index 9171a056..929db027 100644
--- a/prog/sensors/main.c
+++ b/prog/sensors/main.c
@@ -302,9 +302,6 @@ const char *sprintf_chip_name(const sensors_chip_name *name)
     snprintf(buf, BUF_SIZE, "%s-isa-%04x", name->prefix, name->addr);
   else if (name->bus == SENSORS_CHIP_NAME_BUS_PCI)
     snprintf(buf, BUF_SIZE, "%s-pci-%04x", name->prefix, name->addr);
-  else if (name->bus == SENSORS_CHIP_NAME_BUS_DUMMY)
-    snprintf(buf, BUF_SIZE, "%s-%s-%04x", name->prefix, name->busname,
-             name->addr);
   else
     snprintf(buf, BUF_SIZE, "%s-i2c-%d-%02x", name->prefix, name->bus,
              name->addr);