diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Revision history for hiedb
 
+## 0.5.0.1 -- 2024-01-12
+
+- Fix incorrect Show Symbol instance in 0.5.0.0
+
 ## 0.5.0.0 -- 2024-01-12
 
 - Handle duplicate record fields in GHC 9.8 instead of crashing
diff --git a/hiedb.cabal b/hiedb.cabal
--- a/hiedb.cabal
+++ b/hiedb.cabal
@@ -1,6 +1,6 @@
 cabal-version:       2.4
 name:                hiedb
-version:             0.5.0.0
+version:             0.5.0.1
 synopsis:            Generates a references DB from .hie files
 description:         Tool and library to index and query a collection of `.hie` files
 bug-reports:         https://github.com/wz1000/HieDb/issues
diff --git a/src/HieDb/Types.hs b/src/HieDb/Types.hs
--- a/src/HieDb/Types.hs
+++ b/src/HieDb/Types.hs
@@ -271,15 +271,13 @@
     } deriving (Eq, Ord)
 
 instance Show Symbol where
-    show s =  toNsChar (occNameSpace $ symName s)
-           <> (  ':'
-              :  occNameString (symName s)
+    show s =     toNsChar (occNameSpace $ symName s)
+              <> occNameString (symName s)
               <> ":"
               <> moduleNameString (moduleName $ symModule s)
               <> ":"
         --       <> unitIdString (moduleUnit $ symModule s)
               <> unitString (moduleUnit $ symModule s)
-              )
 
 instance Read Symbol where
   readsPrec = const $ R.readP_to_S readSymbol