diff --git a/CHANGES b/CHANGES
index d8742a0f..f24ce808 100644
--- a/CHANGES
+++ b/CHANGES
@@ -12,6 +12,7 @@ SVN-HEAD
                           Add ITE IT8720 support
                           Add Texas Instruments TMP411 support
                           Prevent misdetection of W83627DHG on I2C as LM78
+                          W83627DHG has no subclients
 
 2.10.7 (20080701)
   Library: Don't choke on unrecognized devices, part 2
diff --git a/prog/detect/sensors-detect b/prog/detect/sensors-detect
index 49f94c19..ce7c802f 100755
--- a/prog/detect/sensors-detect
+++ b/prog/detect/sensors-detect
@@ -4471,10 +4471,11 @@ sub w83781d_detect
   return if $chip == 8 and  $reg1 != 0x7a;
   return if $chip == 9 and  $reg1 != 0xa1;
   return if $chip == 10 and  $reg1 != 0xa2;
-  $reg1 = i2c_smbus_read_byte_data($file, 0x4a);
   # Default address is 0x2d
   @res = ($addr != 0x2d) ? (7) : (8);
-  return @res if $chip == 9; # No subclients
+  return @res if $chip >= 9; # No subclients
+
+  $reg1 = i2c_smbus_read_byte_data($file, 0x4a);
   push @res, ($reg1 & 0x07) + 0x48 unless $reg1 & 0x08;
   push @res, (($reg1 & 0x70) >> 4) + 0x48 unless ($reg1 & 0x80 or $chip == 2);
   return @res;