diff --git a/src/helpers.c b/src/helpers.c
index 3673df3a..828f88f4 100644
--- a/src/helpers.c
+++ b/src/helpers.c
@@ -110,7 +110,7 @@ helpers_perf_event_open (GVariant *options,
                          gint32    pid,
                          gint32    cpu,
                          gint      group_fd,
-                         gulong    flags,
+                         guint64   flags,
                          gint     *out_fd)
 {
 #ifndef __linux__
diff --git a/src/libsysprof/sysprof-symbol-map.c b/src/libsysprof/sysprof-symbol-map.c
index d0b0ebce..4367cd92 100644
--- a/src/libsysprof/sysprof-symbol-map.c
+++ b/src/libsysprof/sysprof-symbol-map.c
@@ -342,9 +342,9 @@ sysprof_symbol_map_printf (SysprofSymbolMap *self)
       Element *ele = g_ptr_array_index (self->samples, i);
 
       if (ele->tag)
-        g_print ("%-5d: %p: %s [%s]\n", ele->pid, (gpointer)ele->addr, ele->name, g_quark_to_string (ele->tag));
+        g_print ("%-5d: %"G_GUINT64_FORMAT": %s [%s]\n", ele->pid, ele->addr, ele->name, g_quark_to_string (ele->tag));
       else
-        g_print ("%-5d: %p: %s\n", ele->pid, (gpointer)ele->addr, ele->name);
+        g_print ("%-5d: %"G_GUINT64_FORMAT": %s\n", ele->pid, ele->addr, ele->name);
     }
 }