diff --git a/common b/common
index 0dba002c2..54869c987 160000
--- a/common
+++ b/common
@@ -1 +1 @@
-Subproject commit 0dba002c20b1ff4046f45fc51528ee199a20706c
+Subproject commit 54869c9875318db5e7b7c07be1b17931fbc17895
diff --git a/generator/customize.ml b/generator/customize.ml
index e64b45c0d..e2c4b6051 100644
--- a/generator/customize.ml
+++ b/generator/customize.ml
@@ -775,7 +775,7 @@ let rec argspec () =
     let len = String.length arg in
     String.sub arg 0 i, String.sub arg (i+1) (len-(i+1))
   and split_string_triplet option_name arg =
-    match String.nsplit ~max:3 \",\" arg with
+    match String.nsplit ~max:3 \":\" arg with
     | [a; b; c] -> a, b, c
     | _ ->
         error (f_\"invalid format for '--%%s' parameter, see the man page\")