diff --git a/pincer/__init__.py b/pincer/__init__.py
index 01c1fe10..aebaca56 100644
--- a/pincer/__init__.py
+++ b/pincer/__init__.py
@@ -33,7 +33,7 @@ class VersionInfo(NamedTuple):
     def __repr__(self) -> str:
         return (
             f'{self.major}.{self.minor}.{self.micro}'
-            f'-{self.release_level}{self.serial}' * (self.release_level is not None)
+            + f'-{self.release_level}{self.serial}' * (self.release_level is not None)
         )