diff --git a/doc/manpages/qvm-prefs.rst b/doc/manpages/qvm-prefs.rst
index ea531d00..b1fa8556 100644
--- a/doc/manpages/qvm-prefs.rst
+++ b/doc/manpages/qvm-prefs.rst
@@ -158,7 +158,7 @@ mac
     For template-based HVM ``auto`` mode means to clone template MAC.
 
 maxmem
-    Accepted values: memory size in MB
+    Accepted values: memory size in MiB
 
     Maximum memory size available for this VM. Dynamic memory management (aka
     qmemman) will not be able to balloon over this limit. For VMs with
@@ -168,7 +168,7 @@ maxmem
     TemplateBasedVM uses its template's value as a default.
 
 memory
-    Accepted values: memory size in MB
+    Accepted values: memory size in MiB
 
     Initial memory size for VM. This should be large enough to allow VM startup
     - before qmemman starts managing memory for this VM. For VM with qmemman
@@ -205,7 +205,7 @@ qrexec_timeout
     TemplateBasedVM uses its template's value as a default.
 
 stubdom_mem
-    Accepted values: memory in MB
+    Accepted values: memory in MiB
 
     Amount of memory to allocate to stubdomain. By default let Xen choose
     sensible value. This property is mostly for debugging early stubdomain
diff --git a/qubesadmin/tools/qvm_ls.py b/qubesadmin/tools/qvm_ls.py
index b7627ee5..38b39eae 100644
--- a/qubesadmin/tools/qvm_ls.py
+++ b/qubesadmin/tools/qvm_ls.py
@@ -308,14 +308,14 @@ def format(self, vm):
 
 
 def calc_size(vm, volume_name):
-    ''' Calculates the volume size in MB '''
+    ''' Calculates the volume size in MiB '''
     try:
         return vm.volumes[volume_name].size // 1024 // 1024
     except KeyError:
         return 0
 
 def calc_usage(vm, volume_name):
-    ''' Calculates the volume usage in MB '''
+    ''' Calculates the volume usage in MiB '''
     try:
         return vm.volumes[volume_name].usage // 1024 // 1024
     except KeyError: