diff --git a/Dockerfile b/Dockerfile
index fe69aa9..41e4c21 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@ WORKDIR /
 # Install build tools and dependencies
 RUN apt-get update && apt-get install -y \
     wget \
-    default-jre \
+    default-jdk \
     ruby \
     zip \
     7zip
diff --git a/aperisolve/analyzers/binwalk.py b/aperisolve/analyzers/binwalk.py
index 32d6fec..69920e7 100644
--- a/aperisolve/analyzers/binwalk.py
+++ b/aperisolve/analyzers/binwalk.py
@@ -44,7 +44,9 @@ def analyze_binwalk(input_img: Path, output_dir: Path) -> None:
         if extracted_dir.exists():
             shutil.rmtree(extracted_dir)
 
-        if len(stderr) > 0:
+        # Only report error if stderr exists AND extraction failed.
+        # If zip_exist is True, binwalk worked (despite warnings), so we proceed.
+        if len(stderr) > 0 and not zip_exist:
             err = {
                 "binwalk": {
                     "status": "error",