diff --git a/novmpy/views/vtil_graph.py b/novmpy/views/vtil_graph.py
index 1efd8c0..0892f19 100644
--- a/novmpy/views/vtil_graph.py
+++ b/novmpy/views/vtil_graph.py
@@ -290,7 +290,10 @@ def instruction_tostring(basic_block: vtil.basic_block, it):
     if imm > 0:
         if is_strlit(get_flags(imm)):
             content = get_strlit_contents(imm, -1, get_str_type(imm))
-            comment += str(content[:30])
+            content = content.decode('UTF-8', 'replace')
+            comment += repr(content[:30])
+            if len(content) > 30:
+                comment += '...'
         else:
             comment += ida_name.get_name(imm)
     global bs_size