diff --git a/Xext/namespace/hook-init-rootwindow.c b/Xext/namespace/hook-init-rootwindow.c
index 0bececddb0..bcb8bdae2a 100644
--- a/Xext/namespace/hook-init-rootwindow.c
+++ b/Xext/namespace/hook-init-rootwindow.c
@@ -35,7 +35,7 @@ void hookInitRootWindow(CallbackListPtr *pcbl, void *data, void *screen)
     xorg_list_for_each_entry(walk, &ns_list, entry) {
         if (strcmp(walk->name, NS_NAME_ROOT)==0) {
             walk->rootWindow = realRoot;
-            XNS_LOG("<%s> actual root 0x%0" PRIx32 "\n", walk->name, walk->rootWindow->drawable.id);
+            XNS_LOG("<%s> actual root 0x%0llx\n", walk->name, (unsigned long long)walk->rootWindow->drawable.id);
             continue;
         }
 
@@ -67,6 +67,6 @@ void hookInitRootWindow(CallbackListPtr *pcbl, void *data, void *screen)
         snprintf(buf, sizeof(buf)-1, "XNS-ROOT:%s", walk->name);
         setWinStrProp(pWin, XA_WM_NAME, buf);
 
-        XNS_LOG("<%s> virtual root 0x%0" PRIx32 "\n", walk->name, walk->rootWindow->drawable.id);
+        XNS_LOG("<%s> virtual root 0x%0llx\n", walk->name, (unsigned long long)walk->rootWindow->drawable.id);
     }
 }
diff --git a/Xext/namespace/hook-windowproperty.c b/Xext/namespace/hook-windowproperty.c
index 8c999267fd..79da836c5e 100644
--- a/Xext/namespace/hook-windowproperty.c
+++ b/Xext/namespace/hook-windowproperty.c
@@ -24,7 +24,7 @@ void hookWindowProperty(CallbackListPtr *pcbl, void *unused, void *calldata)
     if (!owner) {
         param->status = BadWindow;
         param->skip = TRUE;
-        XNS_HOOK_LOG("owner of window 0x%0" PRIx32 "doesn't exist\n", param->window);
+        XNS_HOOK_LOG("owner of window 0x%0llx doesn't exist\n", (unsigned long long)param->window);
         return;
     }