diff --git a/src/libsysprof-analyze/sysprof-document-counter-private.h b/src/libsysprof-analyze/sysprof-document-counter-private.h
index ff3d27b5..ac925d37 100644
--- a/src/libsysprof-analyze/sysprof-document-counter-private.h
+++ b/src/libsysprof-analyze/sysprof-document-counter-private.h
@@ -25,6 +25,7 @@
 G_BEGIN_DECLS
 
 SysprofDocumentCounter *_sysprof_document_counter_new (guint       id,
+                                                       guint       type,
                                                        GRefString *category,
                                                        GRefString *name,
                                                        GRefString *description);
diff --git a/src/libsysprof-analyze/sysprof-document-counter.c b/src/libsysprof-analyze/sysprof-document-counter.c
index 070775d6..aeea429b 100644
--- a/src/libsysprof-analyze/sysprof-document-counter.c
+++ b/src/libsysprof-analyze/sysprof-document-counter.c
@@ -29,6 +29,7 @@ struct _SysprofDocumentCounter
   GRefString *description;
   GRefString *name;
   guint id;
+  guint type;
 };
 
 enum {
@@ -95,6 +96,26 @@ sysprof_document_counter_class_init (SysprofDocumentCounterClass *klass)
   object_class->finalize = sysprof_document_counter_finalize;
   object_class->get_property = sysprof_document_counter_get_property;
 
+  properties [PROP_ID] =
+    g_param_spec_uint ("id", NULL, NULL,
+                       0, G_MAXUINT, 0,
+                       (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+  properties [PROP_CATEGORY] =
+    g_param_spec_string ("category", NULL, NULL,
+                         NULL,
+                         (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+  properties [PROP_DESCRIPTION] =
+    g_param_spec_string ("description", NULL, NULL,
+                         NULL,
+                         (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+  properties [PROP_NAME] =
+    g_param_spec_string ("name", NULL, NULL,
+                         NULL,
+                         (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
   g_object_class_install_properties (object_class, N_PROPS, properties);
 }
 
@@ -105,6 +126,7 @@ sysprof_document_counter_init (SysprofDocumentCounter *self)
 
 SysprofDocumentCounter *
 _sysprof_document_counter_new (guint       id,
+                               guint       type,
                                GRefString *category,
                                GRefString *name,
                                GRefString *description)
@@ -113,6 +135,7 @@ _sysprof_document_counter_new (guint       id,
 
   self = g_object_new (SYSPROF_TYPE_DOCUMENT_COUNTER, NULL);
   self->id = id;
+  self->type = type;
   self->category = category;
   self->name = name;
   self->description = description;
@@ -151,3 +174,17 @@ sysprof_document_counter_get_id (SysprofDocumentCounter *self)
 
   return self->id;
 }
+
+GType
+sysprof_document_counter_get_value_type (SysprofDocumentCounter *self)
+{
+  g_return_val_if_fail (SYSPROF_IS_DOCUMENT_COUNTER (self), G_TYPE_INVALID);
+
+  if (self->type == SYSPROF_CAPTURE_COUNTER_INT64)
+    return G_TYPE_INT64;
+
+  if (self->type == SYSPROF_CAPTURE_COUNTER_DOUBLE)
+    return G_TYPE_DOUBLE;
+
+  return G_TYPE_INVALID;
+}
diff --git a/src/libsysprof-analyze/sysprof-document-counter.h b/src/libsysprof-analyze/sysprof-document-counter.h
index 0c669443..af3e1f7e 100644
--- a/src/libsysprof-analyze/sysprof-document-counter.h
+++ b/src/libsysprof-analyze/sysprof-document-counter.h
@@ -39,5 +39,7 @@ SYSPROF_AVAILABLE_IN_ALL
 const char *sysprof_document_counter_get_name        (SysprofDocumentCounter *self);
 SYSPROF_AVAILABLE_IN_ALL
 guint       sysprof_document_counter_get_id          (SysprofDocumentCounter *self);
+SYSPROF_AVAILABLE_IN_ALL
+GType       sysprof_document_counter_get_value_type  (SysprofDocumentCounter *self);
 
 G_END_DECLS