diff --git a/src/plotcontrolpanel.cpp b/src/plotcontrolpanel.cpp
--- a/src/plotcontrolpanel.cpp
+++ b/src/plotcontrolpanel.cpp
@@ -29,7 +29,7 @@
 #include "setting_defines.h"
 
 /// Confirm if #samples is being set to a value greater than this
-const int NUMSAMPLES_CONFIRM_AT = 10000;
+const int NUMSAMPLES_CONFIRM_AT = 1000000;
 
 /// Used for scale range selection combobox
 struct Range
diff --git a/src/plotcontrolpanel.ui b/src/plotcontrolpanel.ui
--- a/src/plotcontrolpanel.ui
+++ b/src/plotcontrolpanel.ui
@@ -158,7 +158,7 @@
         <number>2</number>
        </property>
        <property name="maximum">
-        <number>1000000</number>
+        <number>10000000</number>
        </property>
        <property name="value">
         <number>1000</number>