diff --git a/doc/src/Build_diskspace.rst b/doc/src/Build_diskspace.rst
index e7ff42902e..48ab21fd70 100644
--- a/doc/src/Build_diskspace.rst
+++ b/doc/src/Build_diskspace.rst
@@ -34,7 +34,7 @@ reduce the storage requirements. Here are some suggestions:
 
 - The folders containing the documentation tree (doc), the examples (examples) are not needed to build and
   run LAMMPS and can be safely deleted.  Some files in the potentials folder are large and may be deleted,
-  if not needed.  The largest of those files (occupying about 120 Mbyte combined) will only be downloaded on
+  if not needed.  The largest of those files (occupying about 120 MBytes combined) will only be downloaded on
   demand, when the corresponding package is installed.
 
 - When using the CMake build procedure, the compilation can be done on a (local) scratch storage that will not
diff --git a/doc/src/fix_halt.rst b/doc/src/fix_halt.rst
index d7f7f75515..46d5cd89bb 100644
--- a/doc/src/fix_halt.rst
+++ b/doc/src/fix_halt.rst
@@ -19,7 +19,7 @@ Syntax
 
        bondmax = length of longest bond in the system (in length units)
        tlimit = elapsed CPU time (in seconds)
-       diskfree = free disk space (in megabytes)
+       diskfree = free disk space (in MBytes)
        v_name = name of :doc:`equal-style variable <variable>`
 
 * operator = "<" or "<=" or ">" or ">=" or "==" or "!=" or "\|\^"
@@ -81,7 +81,7 @@ the timer frequently across a large number of processors may be
 non-negligible.
 
 The *diskfree* attribute will check for available disk space (in
-megabytes) on supported operating systems. By default it will
+MBytes) on supported operating systems. By default it will
 check the file system of the current working directory.  This
 can be changed with the optional *path* keyword, which will take
 the path to a file or folder on the file system to be checked
diff --git a/doc/src/fix_qtb.rst b/doc/src/fix_qtb.rst
index e6975748c4..c41a58a8f4 100644
--- a/doc/src/fix_qtb.rst
+++ b/doc/src/fix_qtb.rst
@@ -128,7 +128,7 @@ spectrum while consumes more memory.  With fixed *f_max* and
 :math:`\gamma`, *N_f* should be big enough to converge the classical
 temperature :math:`T^{cl}` as a function of target quantum bath
 temperature. Memory usage per processor could be from 10 to 100
-Mbytes.
+MBytes.
 
 .. note::
 
diff --git a/doc/utils/sphinx-config/false_positives.txt b/doc/utils/sphinx-config/false_positives.txt
index 62f58f3ef5..7e3886e2fd 100644
--- a/doc/utils/sphinx-config/false_positives.txt
+++ b/doc/utils/sphinx-config/false_positives.txt
@@ -1891,7 +1891,6 @@ maxX
 Mayergoyz
 Mayoral
 mbt
-Mbytes
 MBytes
 mc
 McLachlan