diff --git a/BatteryMeter.c b/BatteryMeter.c
index 5fda38b1..622b7798 100644
--- a/BatteryMeter.c
+++ b/BatteryMeter.c
@@ -75,6 +75,7 @@ MeterClass BatteryMeter_class = {
    },
    .setValues = BatteryMeter_setValues,
    .defaultMode = TEXT_METERMODE,
+   .maxItems = 1,
    .total = 100.0,
    .attributes = BatteryMeter_attributes,
    .name = "Battery",
diff --git a/CPUMeter.c b/CPUMeter.c
index 7685f405..4a945c0e 100644
--- a/CPUMeter.c
+++ b/CPUMeter.c
@@ -312,8 +312,8 @@ MeterClass LeftCPUs2Meter_class = {
    .total = 100.0,
    .attributes = CPUMeter_attributes, 
    .name = "LeftCPUs2",
-   .description = "CPUs (1&2/4): first half in 2 shorter columns",
    .uiName = "CPUs (1&2/4)",
+   .description = "CPUs (1&2/4): first half in 2 shorter columns",
    .caption = "CPU",
    .draw = DualColCPUsMeter_draw,
    .init = AllCPUsMeter_init,
diff --git a/ClockMeter.c b/ClockMeter.c
index d702aa5f..a248b9bb 100644
--- a/ClockMeter.c
+++ b/ClockMeter.c
@@ -34,6 +34,7 @@ MeterClass ClockMeter_class = {
    },
    .setValues = ClockMeter_setValues, 
    .defaultMode = TEXT_METERMODE,
+   .maxItems = 1,
    .total = 1440, /* 24*60 */
    .attributes = ClockMeter_attributes,
    .name = "Clock",
diff --git a/HostnameMeter.c b/HostnameMeter.c
index b46541c3..ccfaaca9 100644
--- a/HostnameMeter.c
+++ b/HostnameMeter.c
@@ -31,6 +31,7 @@ MeterClass HostnameMeter_class = {
    },
    .setValues = HostnameMeter_setValues, 
    .defaultMode = TEXT_METERMODE,
+   .maxItems = 0,
    .total = 100.0,
    .attributes = HostnameMeter_attributes,
    .name = "Hostname",
diff --git a/LoadAverageMeter.c b/LoadAverageMeter.c
index d292a7cb..a5a04d32 100644
--- a/LoadAverageMeter.c
+++ b/LoadAverageMeter.c
@@ -77,6 +77,7 @@ MeterClass LoadMeter_class = {
    },
    .setValues = LoadMeter_setValues, 
    .defaultMode = TEXT_METERMODE,
+   .maxItems = 1,
    .total = 100.0,
    .attributes = LoadMeter_attributes,
    .name = "Load",
diff --git a/Meter.c b/Meter.c
index 9a7868e7..321fd28b 100644
--- a/Meter.c
+++ b/Meter.c
@@ -132,12 +132,8 @@ Meter* Meter_new(struct ProcessList_* pl, int param, MeterClass* type) {
    this->h = 1;
    this->param = param;
    this->pl = pl;
-   char maxItems = type->maxItems;
-   if (maxItems == 0) {
-      maxItems = 1;
-   }
-   type->curItems = maxItems;
-   this->values = xCalloc(maxItems, sizeof(double));
+   type->curItems = type->maxItems;
+   this->values = xCalloc(type->maxItems, sizeof(double));
    this->total = type->total;
    this->caption = xStrdup(type->caption);
    if (Meter_initFn(this))
@@ -550,6 +546,7 @@ MeterClass BlankMeter_class = {
    },
    .setValues = BlankMeter_setValues,
    .defaultMode = TEXT_METERMODE,
+   .maxItems = 0,
    .total = 100.0,
    .attributes = BlankMeter_attributes,
    .name = "Blank",
diff --git a/SwapMeter.c b/SwapMeter.c
index 895ca0be..476c4240 100644
--- a/SwapMeter.c
+++ b/SwapMeter.c
@@ -56,6 +56,7 @@ MeterClass SwapMeter_class = {
    },
    .setValues = SwapMeter_setValues, 
    .defaultMode = BAR_METERMODE,
+   .maxItems = 1,
    .total = 100.0,
    .attributes = SwapMeter_attributes,
    .name = "Swap",
diff --git a/TasksMeter.c b/TasksMeter.c
index f3764d64..dc057188 100644
--- a/TasksMeter.c
+++ b/TasksMeter.c
@@ -74,8 +74,8 @@ MeterClass TasksMeter_class = {
    },
    .setValues = TasksMeter_setValues, 
    .defaultMode = TEXT_METERMODE,
-   .total = 100.0,
    .maxItems = 4,
+   .total = 100.0,
    .attributes = TasksMeter_attributes, 
    .name = "Tasks",
    .uiName = "Task counter",
diff --git a/UptimeMeter.c b/UptimeMeter.c
index a033b171..5e0a9e9a 100644
--- a/UptimeMeter.c
+++ b/UptimeMeter.c
@@ -51,6 +51,7 @@ MeterClass UptimeMeter_class = {
    },
    .setValues = UptimeMeter_setValues, 
    .defaultMode = TEXT_METERMODE,
+   .maxItems = 1,
    .total = 100.0,
    .attributes = UptimeMeter_attributes,
    .name = "Uptime",
diff --git a/XAlloc.c b/XAlloc.c
index cc290211..38556987 100644
--- a/XAlloc.c
+++ b/XAlloc.c
@@ -29,7 +29,7 @@ void* xMalloc(size_t size) {
 
 void* xCalloc(size_t nmemb, size_t size) {
    void* data = calloc(nmemb, size);
-   if (!data) {
+   if (!data && nmemb > 0 && size > 0) {
       fail();
    }
    return data;