diff --git a/.gitignore b/.gitignore
index 2e616cf..b84dfcf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,6 +17,7 @@ lib/
 lib64/
 parts/
 sdist/
+Tetris2000.build/
 var/
 wheels/
 *.egg-info/
diff --git a/Tetris2000.py b/Tetris2000.py
index 9efbed4..bd9e412 100644
--- a/Tetris2000.py
+++ b/Tetris2000.py
@@ -147,7 +147,7 @@ class Matrix(Grid):
         self.speed = consts.INITIAL_SPEED * (0.8 - ((level - 1) * 0.007)) ** (level - 1)
         self.fall_timer.start(self.speed)
         if level > 15:
-            self.lock_delay *= consts.AFTER_LVL_15_ACCELERATION
+            self.lock_delay = consts.LOCK_DELAY * (consts.AFTER_LVL_15_ACCELERATION ** (level-15))
 
     def empty_row(self):
         return [None for x in range(self.COLUMNS)]
@@ -1077,6 +1077,10 @@ class Frames(QtWidgets.QWidget):
                 )
             )
         msgbox.setDetailedText(self.stats.text(full_stats=True))
+        # Find and set default the "show details" button
+        for button in msgbox.buttons():
+            if msgbox.buttonRole(button) == QtWidgets.QMessageBox.ActionRole:
+                msgbox.setDefaultButton(button)
         msgbox.exec_()
 
 
diff --git a/consts.py b/consts.py
index 1c8cfcc..3eccb7e 100644
--- a/consts.py
+++ b/consts.py
@@ -38,7 +38,7 @@ ENTRY_DELAY = 80
 LINE_CLEAR_DELAY = 80
 LOCK_DELAY = 500
 TEMPORARY_TEXT_DURATION = 1000
-AFTER_LVL_15_ACCELERATION = 0.85
+AFTER_LVL_15_ACCELERATION = 0.9
 
 # Block Colors
 BLOCK_BORDER_COLOR = QtGui.QColor(0, 159, 218, 255)
diff --git a/propertize/convert_string.py b/propertize/convert_string.py
index 86c41f3..059f792 100644
--- a/propertize/convert_string.py
+++ b/propertize/convert_string.py
@@ -2,7 +2,7 @@
 import re
 
 
-first_cap_re = re.compile('(.)([A-Z][a-z]+)')
+first_cap_re = re.compile('([^.])([A-Z][a-z]+)')
 all_cap_re = re.compile('([a-z0-9])([A-Z])')
 
 def snake_case(s):