diff --git a/spl/json.spl b/spl/json.spl
index b49f5c7..6d261fd 100644
--- a/spl/json.spl
+++ b/spl/json.spl
@@ -3,9 +3,25 @@ construct json namespace {
 	_StringyJSON
 	;
 	props-to-sjson { s | with spaces props this ;
-		props:last:get<1> dup null eq not if {
-			"\"" swap _str :replace<"\\" "\\\\">:replace<"\"" "\\\""> concat "\"" concat 2 stop
-		} pop
+		def value, comma
+		"," spaces if { " " concat } =comma
+
+		props:last:get<1> =value
+		value null eq not if {
+			value gettype "array" eq if {
+				"[" value
+					:iter
+					:map<| 0 swap properties this:props-to-sjson>
+					:join<comma> concat
+					"]" concat
+				3 stop
+			}
+			"\""
+				value _str :replace<"\\" "\\\\">:replace<"\"" "\\\""> concat 
+				"\"" concat
+			2 stop
+		}
+
 		"{" 
 		props
 			:iter
@@ -15,9 +31,9 @@ construct json namespace {
 				"\"" 
 					key :replace<"\\" "\\\\">:replace<"\"" "\\\""> concat 
 					"\":" concat spaces if { " " concat } 
-					spaces value properties this:props-to-json concat 
+					spaces value properties this:props-to-sjson concat 
 			}>
-			:join<", "> concat
+			:join<comma> concat
 		"}" concat
 	}
 }
diff --git a/test.spl b/test.spl
index 6a0d2b8..5a258b3 100644
--- a/test.spl
+++ b/test.spl
@@ -6,6 +6,7 @@
 "spl/time.spl" import
 "spl/httpserver/base.spl" import
 "spl/linkedlist.spl" import
+"spl/json.spl" import
 
 
 "SPL tester" =program-name
@@ -329,6 +330,12 @@ func main { int | with args ;
 
     ^ok =>? ^error not if { println }
 
+    "" println
+    "json test" println
+
+    0 [ 0 1 2 "hi" ] properties json:props-to-sjson println
+
+