diff --git a/IO_EXIOExpander.h b/IO_EXIOExpander.h
index f4705f9..675d66c 100644
--- a/IO_EXIOExpander.h
+++ b/IO_EXIOExpander.h
@@ -116,6 +116,7 @@ private:
             _analogueInputStates = (uint8_t*) calloc(analogueBytesNeeded, 1);
             _analogueInputBuffer = (uint8_t*) calloc(analogueBytesNeeded, 1);
             _analoguePinMap = (uint8_t*) calloc(_numAnaloguePins, 1);
+            _analoguePinBytes = analogueBytesNeeded;
           }
         } else {
           DIAG(F("EX-IOExpander I2C:%s ERROR configuring device"), _I2CAddress.toString());
@@ -222,7 +223,7 @@ private:
           // Here we need to copy the values from input buffer to the analogue value array.  We need to 
           // do this to avoid tearing of the values (i.e. one byte of a two-byte value being changed
           // while the value is being read).
-          memcpy(_analogueInputStates, _analogueInputBuffer, sizeof(_analogueInputBuffer)); // Copy I2C input buffer to states
+          memcpy(_analogueInputStates, _analogueInputBuffer, _analoguePinBytes); // Copy I2C input buffer to states
 
         } else if (_readState == RDS_DIGITAL) {
           // Read of digital states was in progress, so process received values 
diff --git a/version.h b/version.h
index b1704de..259dbaa 100644
--- a/version.h
+++ b/version.h
@@ -4,7 +4,8 @@
 #include "StringFormatter.h"
 
 
-#define VERSION "4.2.33"
+#define VERSION "4.2.34"
+// 4.2.34 - Completely fix EX-IOExpander analogue inputs
 // 4.2.33 - Fix EX-IOExpander non-working analogue inputs
 // 4.2.32 - Fix LCD/Display bugfixes from 4.2.29
 // 4.2.31 - Removes EXRAIL statup from top of file. (BREAKING CHANGE !!)