diff --git a/slfmt.nimble b/slfmt.nimble
index f508864..64ab93e 100644
--- a/slfmt.nimble
+++ b/slfmt.nimble
@@ -1,6 +1,6 @@
 # Package
 
-version       = "0.2.0"
+version       = "0.2.1"
 author        = "Jonathan Bernard"
 description   = "Small utility to pretty-print strucutured logs."
 license       = "MIT"
diff --git a/src/slfmt.nim b/src/slfmt.nim
index 11f7e48..3728017 100644
--- a/src/slfmt.nim
+++ b/src/slfmt.nim
@@ -4,7 +4,7 @@ import docopt, timeutils, zero_functional
 from std/logging import Level
 from std/sequtils import toSeq
 
-const VERSION = "0.2.0"
+const VERSION = "0.2.1"
 
 const USAGE = """Usage:
    slfmt [options]
@@ -134,6 +134,8 @@ when isMainModule:
     while(sin.readLine(line)):
       try:
         let logJson = parseLogLine(line)
+        if logJson.kind != JObject:
+          raise newException(JsonParsingError, "Expected a JSON object")
 
         if logLevel.isSome and logJson.hasKey("level"):
           let lvl = parseLogLevel(logJson["level"].getStr)