diff --git a/FBTweak/_FBTweakTableViewCell.m b/FBTweak/_FBTweakTableViewCell.m
index 2a2eafe6..79b2c426 100644
--- a/FBTweak/_FBTweakTableViewCell.m
+++ b/FBTweak/_FBTweakTableViewCell.m
@@ -314,6 +314,7 @@ - (void)_updateValue:(FBTweakValue)value primary:(BOOL)primary write:(BOOL)write
   } else if (_mode == _FBTweakTableViewCellModeString) {
     if (primary) {
       _textField.text = value;
+      [self _updateAutocapitalizationType];
     }
   } else if (_mode == _FBTweakTableViewCellModeInteger) {
     if (primary) {
@@ -347,4 +348,18 @@ - (void)_updateValue:(FBTweakValue)value primary:(BOOL)primary write:(BOOL)write
   }
 }
 
+- (void)_updateAutocapitalizationType
+{
+    unichar firstLetter = _textField.text.length > 0
+                                ? [_textField.text characterAtIndex:0]
+                                : 0;
+    BOOL isUppercase = [[NSCharacterSet lowercaseLetterCharacterSet] characterIsMember:firstLetter];
+    if (isUppercase) {
+        _textField.autocapitalizationType = UITextAutocapitalizationTypeNone;
+        return;
+    }
+
+    _textField.autocapitalizationType = UITextAutocapitalizationTypeSentences;
+}
+
 @end