diff --git a/build-slides.sh b/build-slides.sh
index 5e9732d..d0653de 100755
--- a/build-slides.sh
+++ b/build-slides.sh
@@ -31,7 +31,10 @@ chmod 777 "$TEMP_OUTPUT"
 trap "rm -rf '$TEMP_OUTPUT'" EXIT
 
 if command -v marp &>/dev/null; then
-  marp --html --output "$OUTPUT_DIR/" "${SLIDES[@]}"
+  for slide in "${SLIDES[@]}"; do
+    BASENAME=$(basename "${slide%.*}")
+    marp --html --output "$OUTPUT_DIR/${BASENAME}.html" "$slide"
+  done
 else
   echo "marp not found locally — using Docker (marpteam/marp-cli)..."
   for slide in "${SLIDES[@]}"; do