diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0ae15dc..d94f499 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 0.5.2 (2015-03-29)
+
+  * Fix small potential bug in (passed)
+
 ## 0.5.1 (2015-03-29)
 
   * Small refactor: replace anonymous function with simpler eval
diff --git a/module.l b/module.l
index e84787e..81cbfa2 100644
--- a/module.l
+++ b/module.l
@@ -1,6 +1,6 @@
 [de MODULE_INFO
   ("name"       "unit")
-  ("version"    "0.5.1")
+  ("version"    "0.5.2")
   ("summary"    "Unit Testing framework for PicoLisp")
   ("source"     "https://github.com/aw/picolisp-unit.git")
   ("author"     "Alexander Williams")
diff --git a/unit.l b/unit.l
index 704a72f..c38864a 100644
--- a/unit.l
+++ b/unit.l
@@ -58,7 +58,7 @@
           Message
           (colour) ]
 
-[de passed @
+[de passed (Message)
   (inc '*Passed)
   (inc '*Counter)
   (queue '*Results (list T *Counter Message))