diff --git a/src/wrapper/java/org/kiwix/kiwixlib/Pair.java b/src/wrapper/java/org/kiwix/kiwixlib/Pair.java
index ef49e1b33..05aacb678 100644
--- a/src/wrapper/java/org/kiwix/kiwixlib/Pair.java
+++ b/src/wrapper/java/org/kiwix/kiwixlib/Pair.java
@@ -22,5 +22,5 @@ package org.kiwix.kiwixlib;
 public class Pair
 {
   public String filename;
-  public int offset;
+  public long offset;
 }
diff --git a/src/wrapper/java/utils.h b/src/wrapper/java/utils.h
index 7fa32a161..f9220403f 100644
--- a/src/wrapper/java/utils.h
+++ b/src/wrapper/java/utils.h
@@ -258,14 +258,14 @@ inline void setBoolObjValue(const bool value, const jobject obj, JNIEnv* env)
   env->SetIntField(obj, objFid, c2jni(value, env));
 }
 
-inline void setPairObjValue(const std::string& filename, const int offset,
+inline void setPairObjValue(const std::string& filename, const long offset,
                             const jobject obj, JNIEnv* env)
 {
   jclass objClass = env->GetObjectClass(obj);
   jfieldID filenameFid = env->GetFieldID(objClass, "filename", "Ljava/lang/String;");
   env->SetObjectField(obj, filenameFid, c2jni(filename, env));
-  jfieldID offsetFid = env->GetFieldID(objClass, "offset", "I");
-  env->SetIntField(obj, offsetFid, offset);
+  jfieldID offsetFid = env->GetFieldID(objClass, "offset", "J");
+  env->SetLongField(obj, offsetFid, offset);
 }
 
 #endif // _ANDROID_JNI_UTILS_H