diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-objc/TestDataFormatterObjCNSData.py b/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-objc/TestDataFormatterObjCNSData.py
index 37991ddb99d8ab..4fe687866f3bac 100644
--- a/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-objc/TestDataFormatterObjCNSData.py
+++ b/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-objc/TestDataFormatterObjCNSData.py
@@ -23,7 +23,7 @@ def nsdata_data_formatter_commands(self):
         self.expect(
             'frame variable immutableData mutableData data_ref mutable_data_ref mutable_string_ref concreteData concreteMutableData',
             substrs=[
-                '(NSData *) immutableData = ', ' 4 bytes',
+                '(NSData *) immutableData = ', ' 5 bytes',
                 '(NSData *) mutableData = ', ' 14 bytes',
                 '(CFDataRef) data_ref = ', '@"5 bytes"',
                 '(CFMutableDataRef) mutable_data_ref = ', '@"5 bytes"',
diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-objc/main.m b/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-objc/main.m
index f0dc2055976a97..aac729c74590cf 100644
--- a/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-objc/main.m
+++ b/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-objc/main.m
@@ -401,7 +401,7 @@ int main (int argc, const char * argv[])
 
 	    [mutableGetConst length];
 
-	    NSData *immutableData = [[NSData alloc] initWithBytes:"HELLO" length:4];
+	    NSData *immutableData = [[NSData alloc] initWithBytes:"HELLO" length:5];
 	    NSData *mutableData = [[NSMutableData alloc] initWithBytes:"NODATA" length:6];
 
 	    // No-copy versions of NSData initializers use NSConcreteData if over 2^16 elements are specified.