diff --git a/jadx-commons/jadx-zip/src/main/java/jadx/zip/ZipContent.java b/jadx-commons/jadx-zip/src/main/java/jadx/zip/ZipContent.java
index 986fe13c8..02e6967b4 100644
--- a/jadx-commons/jadx-zip/src/main/java/jadx/zip/ZipContent.java
+++ b/jadx-commons/jadx-zip/src/main/java/jadx/zip/ZipContent.java
@@ -2,14 +2,17 @@ package jadx.zip;
 
 import java.io.Closeable;
 import java.io.IOException;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.function.Function;
-import java.util.stream.Collectors;
 
 import org.jetbrains.annotations.Nullable;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class ZipContent implements Closeable {
+	private static final Logger LOG = LoggerFactory.getLogger(ZipContent.class);
+
 	private final IZipParser zipParser;
 	private final List<IZipEntry> entries;
 	private final Map<String, IZipEntry> entriesMap;
@@ -17,7 +20,19 @@ public class ZipContent implements Closeable {
 	public ZipContent(IZipParser zipParser, List<IZipEntry> entries) {
 		this.zipParser = zipParser;
 		this.entries = entries;
-		this.entriesMap = entries.stream().collect(Collectors.toMap(IZipEntry::getName, Function.identity()));
+		this.entriesMap = buildNameMap(zipParser, entries);
+	}
+
+	private static Map<String, IZipEntry> buildNameMap(IZipParser zipParser, List<IZipEntry> entries) {
+		Map<String, IZipEntry> map = new HashMap<>(entries.size());
+		for (IZipEntry entry : entries) {
+			String name = entry.getName();
+			IZipEntry prevEntry = map.put(name, entry);
+			if (prevEntry != null) {
+				LOG.warn("Found duplicate entry: {} in {}", name, zipParser);
+			}
+		}
+		return map;
 	}
 
 	public List<IZipEntry> getEntries() {