diff --git a/libavcodec/vulkan_av1.c b/libavcodec/vulkan_av1.c
index 5dc3e8919c..5447398612 100644
--- a/libavcodec/vulkan_av1.c
+++ b/libavcodec/vulkan_av1.c
@@ -542,7 +542,7 @@ static int vk_av1_end_frame(AVCodecContext *avctx)
         rav[i] = ap->ref_src[i]->f;
     }
 
-    av_log(avctx, AV_LOG_VERBOSE, "Decoding frame, %lu bytes, %i tiles\n",
+    av_log(avctx, AV_LOG_VERBOSE, "Decoding frame, %"SIZE_SPECIFIER" bytes, %i tiles\n",
            vp->slices_size, ap->tile_list.nb_tiles);
 
     return ff_vk_decode_frame(avctx, pic->f, vp, rav, rvp);
diff --git a/libavcodec/vulkan_h264.c b/libavcodec/vulkan_h264.c
index 7df2e99617..0548232971 100644
--- a/libavcodec/vulkan_h264.c
+++ b/libavcodec/vulkan_h264.c
@@ -524,7 +524,7 @@ static int vk_h264_end_frame(AVCodecContext *avctx)
         rav[i] = hp->ref_src[i]->f;
     }
 
-    av_log(avctx, AV_LOG_VERBOSE, "Decoding frame, %lu bytes, %i slices\n",
+    av_log(avctx, AV_LOG_VERBOSE, "Decoding frame, %"SIZE_SPECIFIER" bytes, %i slices\n",
            vp->slices_size, hp->h264_pic_info.sliceCount);
 
     return ff_vk_decode_frame(avctx, pic->f, vp, rav, rvp);
diff --git a/libavcodec/vulkan_hevc.c b/libavcodec/vulkan_hevc.c
index 592b2526e8..c242370f33 100644
--- a/libavcodec/vulkan_hevc.c
+++ b/libavcodec/vulkan_hevc.c
@@ -909,7 +909,7 @@ static int vk_hevc_end_frame(AVCodecContext *avctx)
         rvp[i] = &rfhp->vp;
     }
 
-    av_log(avctx, AV_LOG_VERBOSE, "Decoding frame, %lu bytes, %i slices\n",
+    av_log(avctx, AV_LOG_VERBOSE, "Decoding frame, %"SIZE_SPECIFIER" bytes, %i slices\n",
            vp->slices_size, hp->h265_pic_info.sliceSegmentCount);
 
     return ff_vk_decode_frame(avctx, pic->frame, vp, rav, rvp);
diff --git a/libavcodec/vulkan_video.c b/libavcodec/vulkan_video.c
index 24ef73ddf9..9a363aab02 100644
--- a/libavcodec/vulkan_video.c
+++ b/libavcodec/vulkan_video.c
@@ -339,7 +339,7 @@ av_cold int ff_vk_video_common_init(void *log, FFVulkanContext *s,
             .memorySize = mem[i].memoryRequirements.size,
         };
 
-        av_log(log, AV_LOG_VERBOSE, "Allocating %lu bytes in bind index %i for video session\n",
+        av_log(log, AV_LOG_VERBOSE, "Allocating %"SIZE_SPECIFIER" bytes in bind index %i for video session\n",
                bind_mem[i].memorySize, bind_mem[i].memoryBindIndex);
     }
 
diff --git a/libavutil/vulkan.c b/libavutil/vulkan.c
index 31e0df494b..bc4466e6c9 100644
--- a/libavutil/vulkan.c
+++ b/libavutil/vulkan.c
@@ -1079,7 +1079,7 @@ int ff_vk_get_pooled_buffer(FFVulkanContext *ctx, AVBufferPool **buf_pool,
     ff_vk_free_buf(ctx, data);
     memset(data, 0, sizeof(*data));
 
-    av_log(ctx, AV_LOG_DEBUG, "Allocating buffer of %lu bytes for pool %p\n",
+    av_log(ctx, AV_LOG_DEBUG, "Allocating buffer of %"SIZE_SPECIFIER" bytes for pool %p\n",
            size, *buf_pool);
 
     err = ff_vk_create_buf(ctx, data, size,