diff --git a/testpar/t_chunk_alloc.c b/testpar/t_chunk_alloc.c
index 88ab3ff4e0..31846b9795 100644
--- a/testpar/t_chunk_alloc.c
+++ b/testpar/t_chunk_alloc.c
@@ -106,8 +106,9 @@ create_chunked_dataset(const char *filename, int nchunks, write_type write)
 	VRFY((memspace >= 0), "");
  
 	/* Create a new file. If file exists its contents will be overwritten. */
-	file_id = H5Fcreate (filename, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
-	VRFY((file_id >= 0), "");
+	file_id = H5Fcreate(h5_rmprefix(filename), H5F_ACC_TRUNC, H5P_DEFAULT,
+		    H5P_DEFAULT);
+	VRFY((file_id >= 0), "H5Fcreate");
 
 	/* Modify dataset creation properties, i.e. enable chunking  */
 	cparms = H5Pcreate (H5P_DATASET_CREATE);
diff --git a/testpar/t_dset.c b/testpar/t_dset.c
index 2591591d94..15c562deb7 100644
--- a/testpar/t_dset.c
+++ b/testpar/t_dset.c
@@ -2122,7 +2122,7 @@ compress_readAll(void)
         hsize_t chunk_dim;           /* Chunk dimensions */
 
         /* Create the file */
-        fid = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+        fid = H5Fcreate(h5_rmprefix(filename), H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
         VRFY((fid > 0), "H5Fcreate succeeded");
 
         /* Create property list for chunking and compression */