diff --git a/java/src/jni/h5pDCPLImp.c b/java/src/jni/h5pDCPLImp.c
index bd44f447bd1..a624fd96987 100644
--- a/java/src/jni/h5pDCPLImp.c
+++ b/java/src/jni/h5pDCPLImp.c
@@ -1067,7 +1067,7 @@ Java_hdf_hdf5lib_H5_H5Pset_1external(JNIEnv *env, jclass clss, jlong plist, jstr
 
     PIN_JAVA_STRING(ENVONLY, name, fileName, NULL, "H5Pset_external: file name not pinned");
 
-    if ((status = H5Pset_external((hid_t)plist, fileName, (off_t)offset, (hsize_t)size)) < 0)
+    if ((status = H5Pset_external((hid_t)plist, fileName, (HDoff_t)offset, (hsize_t)size)) < 0)
         H5_LIBRARY_ERROR(ENVONLY);
 
 done:
@@ -1089,7 +1089,7 @@ Java_hdf_hdf5lib_H5_H5Pget_1external(JNIEnv *env, jclass clss, jlong plist, jint
     jboolean isCopy;
     jstring  str;
     hsize_t  s;
-    off_t    o;
+    HDoff_t  o;
     jsize    arrLen;
     jlong   *theArray = NULL;
     char    *file     = NULL;
@@ -1111,8 +1111,8 @@ Java_hdf_hdf5lib_H5_H5Pget_1external(JNIEnv *env, jclass clss, jlong plist, jint
         if (NULL == (file = (char *)malloc(sizeof(char) * (size_t)name_size)))
             H5_OUT_OF_MEMORY_ERROR(ENVONLY, "H5Pget_external: memory allocation failed");
 
-    if ((status = H5Pget_external((hid_t)plist, (unsigned)idx, (size_t)name_size, file, (off_t *)&o,
-                                  (hsize_t *)&s)) < 0)
+    if ((status = H5Pget_external((hid_t)plist, (unsigned)idx, (size_t)name_size, file, &o, (hsize_t *)&s)) <
+        0)
         H5_LIBRARY_ERROR(ENVONLY);
 
     if (NULL != size) {