diff --git a/README b/README
index cedfaefe..9af035c0 100644
--- a/README
+++ b/README
@@ -95,7 +95,7 @@ At least the following hardware sensor chips are supported:
         MAX6633, MAX6634, MAX6635
   Microchip TC1068, TCM1617, TCN75
   Myson MTP008
-  National Semiconductor LM75, LM76, LM77, LM78, LM78-J, LM79,
+  National Semiconductor LM75, LM76, LM78, LM78-J, LM79,
                          LM80, LM81, LM83, LM84, LM85, LM87,
                          LM89, LM90, LM92, LM99, PC87360,
                          PC87363, PC87364, PC87365, PC87366
diff --git a/TODO b/TODO
index ffeec597..cbc84131 100644
--- a/TODO
+++ b/TODO
@@ -94,8 +94,6 @@ KERNEL MODULES
   something completely different from the description at page 25.
 * gl518sm: Assume that new values are close to old values, so start with
   trying to use a small range near the old values (already partially done)
-* lm77: Add detection in lm75.c and sensors-detect to distinguish from
-  an lm75. Add support for the two new registers.
 * Add MTP006F chip: http://www.myson.com/Pcd/MTP006/Mtp006.pdf
   gfiala@s.netic.de (Guido Fiala) has one on his mainboard
 
diff --git a/doc/chips/SUMMARY b/doc/chips/SUMMARY
index c4d7e9cc..314dcac7 100644
--- a/doc/chips/SUMMARY
+++ b/doc/chips/SUMMARY
@@ -116,7 +116,6 @@ lm75
 	ds75		1	-	-	-	yes	no
 	ds1775		1	-	-	-	yes	no
 	tcn75		1	-	-	-	yes	no
-	lm77		1	-	-	-	yes	no
 
 lm78
 	lm78		1	7	3	-	yes	yes
diff --git a/doc/chips/lm75 b/doc/chips/lm75
index 553313f7..45795e3c 100644
--- a/doc/chips/lm75
+++ b/doc/chips/lm75
@@ -9,11 +9,6 @@ Supported chips:
     Addresses scanned: I2C 0x48 - 0x4f (inclusive)
     Datasheet: Publicly available at the National Semiconductor website
                http://www.national.com
-  * National Semiconductor LM77
-    Prefix: `lm75'
-    Addresses scanned: I2C 0x48 - 0x4b (inclusive)
-    Datasheet: Publicly available at the National Semiconductor website
-               http://www.national.com
   * Dallas Semiconductor DS75
     Prefix: `lm75'
     Addresses scanned: I2C 0x48 - 0x4f (inclusive)
@@ -69,10 +64,6 @@ will do no harm, but will return 'old' values.
 The LM75 is usually used in combination with LM78-like chips, to measure
 the temperature of the processor(s).
 
-The LM77 is supported as well. It is not distinguished from an LM75
-and the two additional registers in the LM77 are not supported.
-The prefix in the /proc directory is still 'lm75'.
-
 The DS75 and DS1775 are supported as well.
 They are not distinguished from an LM75. While these chips
 have three additional bits of accuracy (12 vs. 9 for the LM75),
@@ -81,6 +72,10 @@ The prefix in the /proc directory is still 'lm75'.
 
 The TCN75 is supported as well, and is not distinguished from an LM75.
 
+The LM77 is not supported, contrary to what we pretended for a long time.
+Both chips are simply not compatible, value encoding differs.
+
+
 Chip Features
 -------------
 
diff --git a/mkpatch/mkpatch.pl b/mkpatch/mkpatch.pl
index 52409d2e..01b4dd41 100755
--- a/mkpatch/mkpatch.pl
+++ b/mkpatch/mkpatch.pl
@@ -424,9 +424,9 @@ CONFIG_SENSORS_MTP008
 National Semiconductor LM75 and compatibles
 CONFIG_SENSORS_LM75 
   If you say yes here you get support for National Semiconductor LM75
-  sensor chips and clones: Dallas Semi DS75 and DS1775, TelCon
-  TCN75, and National Semi LM77. This can also be built as a module which
-  can be inserted and removed while the kernel is running.
+  sensor chips and clones: Dallas Semi DS75 and DS1775, and TelCon
+  TCN75. This can also be built as a module which can be inserted and
+  removed while the kernel is running.
 
   You will also need the latest user-space utilties: you can find them
   in the lm_sensors package, which you can download at