diff --git a/src/common/engine/serializer_internal.h b/src/common/engine/serializer_internal.h
index 161d2ebdf7..e05d5785c5 100644
--- a/src/common/engine/serializer_internal.h
+++ b/src/common/engine/serializer_internal.h
@@ -238,7 +238,7 @@ FSerializer &SerializePointer(FSerializer &arc, const char *key, T *&value, T **
 			vv = value - base;
 			if (vv < 0 || vv >= count)
 			{
-				Printf("Trying to serialize out-of-bounds array value with key '%s', index = %lli, size = %lli\n", key, vv, count);
+				Printf("Trying to serialize out-of-bounds array value with key '%s', index = %" PRId64 ", size = %" PRId64 "\n", key, vv, count);
 				vv = -1;
 			}
 		}
@@ -247,7 +247,7 @@ FSerializer &SerializePointer(FSerializer &arc, const char *key, T *&value, T **
 			value = nullptr;
 		else if (vv < 0 || vv >= count)
 		{
-			Printf("Trying to serialize out-of-bounds array value with key '%s', index = %lli, size = %lli\n", key, vv, count);
+			Printf("Trying to serialize out-of-bounds array value with key '%s', index = %" PRId64 ", size = %" PRId64 "\n", key, vv, count);
 			value = nullptr;
 		}
 		else
diff --git a/src/common/rendering/vulkan/system/vk_device.cpp b/src/common/rendering/vulkan/system/vk_device.cpp
index 2e7ca9aad7..ae2b9900f5 100644
--- a/src/common/rendering/vulkan/system/vk_device.cpp
+++ b/src/common/rendering/vulkan/system/vk_device.cpp
@@ -27,6 +27,7 @@
 #undef min
 #endif
 
+#include <inttypes.h>
 #include <vector>
 #include <array>
 #include <set>
@@ -361,7 +362,7 @@ VkBool32 VulkanDevice::DebugCallback(VkDebugUtilsMessageSeverityFlagBitsEXT mess
 		if (callbackData->pObjects[i].pObjectName)
 		{
 			FString hexname;
-			hexname.Format("0x%llx", callbackData->pObjects[i].objectHandle);
+			hexname.Format("0x%" PRIx64, callbackData->pObjects[i].objectHandle);
 			msg.Substitute(hexname.GetChars(), callbackData->pObjects[i].pObjectName);
 		}
 	}
diff --git a/src/common/rendering/vulkan/system/vk_framebuffer.cpp b/src/common/rendering/vulkan/system/vk_framebuffer.cpp
index 9b83b6e26f..5bce012243 100644
--- a/src/common/rendering/vulkan/system/vk_framebuffer.cpp
+++ b/src/common/rendering/vulkan/system/vk_framebuffer.cpp
@@ -22,6 +22,8 @@
 
 #include "volk/volk.h"
 
+#include <inttypes.h>
+
 #include "v_video.h"
 #include "m_png.h"
 #include "templates.h"
@@ -698,7 +700,7 @@ void VulkanFrameBuffer::PrintStartupLog()
 	const auto &limits = props.limits;
 	Printf("Max. texture size: %d\n", limits.maxImageDimension2D);
 	Printf("Max. uniform buffer range: %d\n", limits.maxUniformBufferRange);
-	Printf("Min. uniform buffer offset alignment: %llu\n", limits.minUniformBufferOffsetAlignment);
+	Printf("Min. uniform buffer offset alignment: %" PRIu64 "\n", limits.minUniformBufferOffsetAlignment);
 }
 
 void VulkanFrameBuffer::CreateFanToTrisIndexBuffer()