diff --git a/src/core/bus.cpp b/src/core/bus.cpp
index 170f3b877..a25d56c49 100644
--- a/src/core/bus.cpp
+++ b/src/core/bus.cpp
@@ -351,7 +351,7 @@ void Bus::AddTTYCharacter(char ch)
   {
     if (!s_tty_line_buffer.empty())
     {
-      Log::Writef("TTY", "", LOGLEVEL_INFO, "\033[1;34m%s\033[0m", s_tty_line_buffer.c_str());
+      Log::WriteFmt("TTY", "", LOGLEVEL_INFO, "\033[1;34m{}\033[0m", s_tty_line_buffer);
 #ifdef _DEBUG
       if (CPU::IsTraceEnabled())
         CPU::WriteToExecutionLog("TTY: %s\n", s_tty_line_buffer.c_str());
diff --git a/src/util/vulkan_builders.cpp b/src/util/vulkan_builders.cpp
index 825a717f0..be83c9951 100644
--- a/src/util/vulkan_builders.cpp
+++ b/src/util/vulkan_builders.cpp
@@ -103,15 +103,10 @@ const char* Vulkan::VkResultToString(VkResult res)
   }
 }
 
-void Vulkan::LogVulkanResult(const char* func_name, VkResult res, const char* msg, ...)
+void Vulkan::LogVulkanResult(const char* func_name, VkResult res, std::string_view msg)
 {
-  std::va_list ap;
-  va_start(ap, msg);
-  std::string real_msg = StringUtil::StdStringFromFormatV(msg, ap);
-  va_end(ap);
-
-  Log::Writef("VulkanDevice", func_name, LOGLEVEL_ERROR, "%s (%d: %s)", real_msg.c_str(), static_cast<int>(res),
-              VkResultToString(res));
+  Log::WriteFmt("VulkanDevice", func_name, LOGLEVEL_ERROR, "{} (0x{:08X}: {})", msg, static_cast<unsigned>(res),
+                VkResultToString(res));
 }
 
 Vulkan::DescriptorSetLayoutBuilder::DescriptorSetLayoutBuilder()
diff --git a/src/util/vulkan_builders.h b/src/util/vulkan_builders.h
index 202cbcaaf..4bb17c4de 100644
--- a/src/util/vulkan_builders.h
+++ b/src/util/vulkan_builders.h
@@ -16,14 +16,14 @@
 #define ENABLE_VULKAN_DEBUG_OBJECTS 1
 #endif
 
-#define LOG_VULKAN_ERROR(res, ...) ::Vulkan::LogVulkanResult(__func__, res, __VA_ARGS__)
+#define LOG_VULKAN_ERROR(res, msg) ::Vulkan::LogVulkanResult(__func__, res, msg)
 
 namespace Vulkan {
 // Adds a structure to a chain.
 void AddPointerToChain(void* head, const void* ptr);
 
 const char* VkResultToString(VkResult res);
-void LogVulkanResult(const char* func_name, VkResult res, const char* msg, ...);
+void LogVulkanResult(const char* func_name, VkResult res, std::string_view msg);
 
 class DescriptorSetLayoutBuilder
 {
diff --git a/src/util/vulkan_device.cpp b/src/util/vulkan_device.cpp
index 04befa17a..e564d7fb0 100644
--- a/src/util/vulkan_device.cpp
+++ b/src/util/vulkan_device.cpp
@@ -1199,7 +1199,7 @@ void VulkanDevice::WaitForCommandBufferCompletion(u32 index)
     }
     else if (res != VK_SUCCESS)
     {
-      LOG_VULKAN_ERROR(res, "vkWaitForFences() for cmdbuffer %u failed: ", index);
+      LOG_VULKAN_ERROR(res, TinyString::from_format("vkWaitForFences() for cmdbuffer {} failed: ", index));
       m_last_submit_failed.store(true, std::memory_order_release);
       return;
     }