diff --git a/data/qmi-service-nas.json b/data/qmi-service-nas.json
index 49d5088..e5aa7db 100644
--- a/data/qmi-service-nas.json
+++ b/data/qmi-service-nas.json
@@ -213,7 +213,7 @@
                       "type"      : "TLV",
                       "format"    : "sequence",
                       "contents"  : [ { "name"   : "ECIO",
-                                        "format" : "gint8" },
+                                        "format" : "guint8" },
                                       { "name"          : "Radio Interface",
                                         "format"        : "gint8",
                                         "public-format" : "QmiNasRadioInterface" } ] },
@@ -221,7 +221,7 @@
                       "id"        : "0x15",
                       "mandatory" : "no",
                       "type"      : "TLV",
-                      "format"    : "gint32" },
+                      "format"    : "guint32" },
                     { "name"          : "SINR",
                       "id"            : "0x16",
                       "mandatory"     : "no",