diff --git a/Frameworks/OakTextView/src/OakTextView.mm b/Frameworks/OakTextView/src/OakTextView.mm
index 68e78912..0345fa61 100644
--- a/Frameworks/OakTextView/src/OakTextView.mm
+++ b/Frameworks/OakTextView/src/OakTextView.mm
@@ -70,7 +70,7 @@ NSString* const kUserDefaultsDisableAntiAliasKey = @"disableAntiAlias";
 @property (nonatomic) OakChoiceMenu* choiceMenu;
 @property (nonatomic) NSUInteger refreshNestCount;
 @property (nonatomic) LiveSearchView* liveSearchView;
-@property (nonatomic) NSString* liveSearchString;
+@property (nonatomic, copy) NSString* liveSearchString;
 @property (nonatomic) ng::ranges_t const& liveSearchRanges;
 @end