diff --git a/proving/windows-wsl2/prove-block.sh b/proving/windows-wsl2/prove-block.sh
index b6c07f828..d21373c05 100755
--- a/proving/windows-wsl2/prove-block.sh
+++ b/proving/windows-wsl2/prove-block.sh
@@ -18,18 +18,6 @@ echo "igneum proving v0, run $RUN_ID, $(date -u +%FT%TZ), host $(hostname), fixt
 nvidia-smi --query-gpu=name,memory.total,driver_version --format=csv,noheader 2>/dev/null || echo "nvidia-smi not available in WSL"
 echo "cpu: $(nproc) cores, ram: $(free -g | awk '/Mem:/ {print $2}') GB visible to WSL"
 
-# Fresh sources from the package (edits on the Windows side are picked up), build with the cuda feature.
-mkdir -p "$DEST"
-rsync -a --delete --exclude target "$HERE/package/" "$DEST/" 2>/dev/null || cp -r "$HERE/package/." "$DEST/"
-cd "$DEST/proving/igneum-prove"
-echo "building (first time: 10 to 30 minutes, approximate; the guest is compiled by cargo-prove inside the host build)"
-if ! cargo build --release -p igneum-prove-host --features igneum-prove-host/cuda 2>&1 | tail -3; then
-  echo "BUILD FAILED"; upload; exit 1
-fi
-HOST="$DEST/proving/igneum-prove/target/release/igneum-prove-host"
-FIX="$DEST/proving/fixtures/$FIXTURE.json"
-mkdir -p "$HERE/results"
-
 upload() {
   # Last 256 KB of the log to the intake, same URL and key as upload-log.bat (log uploads only).
   python3 - "$LOG" "$RUN_ID" <<'PY'
@@ -46,6 +34,19 @@ except Exception as e:
 PY
 }
 
+# Fresh sources from the package (edits on the Windows side are picked up), build with the cuda feature.
+mkdir -p "$DEST"
+rsync -a --delete --exclude target "$HERE/package/" "$DEST/" 2>/dev/null || cp -r "$HERE/package/." "$DEST/"
+cd "$DEST/proving/igneum-prove"
+echo "building (first time: 10 to 30 minutes, approximate; the guest is compiled by cargo-prove inside the host build)"
+if ! cargo build --release -p igneum-prove-host --features igneum-prove-host/cuda 2>&1 | tail -3; then
+  echo "BUILD FAILED"; upload; exit 1
+fi
+HOST="$DEST/proving/igneum-prove/target/release/igneum-prove-host"
+FIX="$DEST/proving/fixtures/$FIXTURE.json"
+mkdir -p "$HERE/results"
+
+
 echo "=== GPU run: SP1_PROVER=cuda, modes execute + core + compressed (the first run downloads sp1-gpu-server, about 134 MB) ==="
 SP1_PROVER=cuda RUST_LOG=info "$HOST" "$FIX" --mode all --out "$HERE/results/$FIXTURE-cuda-$STAMP.json"
 echo "gpu run exit $?"