diff --git a/docs/theme.setup b/docs/theme.setup
index eb5b7f6..f259c95 100644
--- a/docs/theme.setup
+++ b/docs/theme.setup
@@ -8,7 +8,7 @@
 #+INFOJS_OPT: toc:t mouse:underline path:org-info.js
 #+HTML_HEAD: <link rel="stylesheet" title="Standard" href="trexio.css" type="text/css" />
 
-#+STARTUP:    align fold nodlcheck hidestars oddeven lognotestate
+#+STARTUP:    align nodlcheck hidestars oddeven lognotestate
 #+AUTHOR:     TREX-CoE
 #+LANGUAGE:   en
 
diff --git a/src/templates_front/templator_front.org b/src/templates_front/templator_front.org
index 67f0e87..16583e6 100644
--- a/src/templates_front/templator_front.org
+++ b/src/templates_front/templator_front.org
@@ -864,19 +864,17 @@ trexio_open(const char* file_name, const char mode,
   /* Try to determine the applicable backend if the back_end argument is TREXIO_AUTO */
   if (back_end == TREXIO_AUTO && mode == 'r') {
 #ifdef HAVE_HDF5
-    trexio_exit_code rc_text, rc_hdf5;
     /* Check if the TREXIO file exists and if it is a directory */
-    rc_text = trexio_text_inquire(file_name);
+    trexio_exit_code rc_text = trexio_text_inquire(file_name);
     if (rc_text == TREXIO_SUCCESS) {
       back_end_local = TREXIO_TEXT;
     } else {
     /* If not, check if it is an HDF5 file */
-      rc_hdf5 = trexio_hdf5_inquire(file_name);
+      trexio_exit_code rc_hdf5 = trexio_hdf5_inquire(file_name);
       if (rc_hdf5 == TREXIO_SUCCESS) {
         back_end_local = TREXIO_HDF5;
       } else {
     /* File is neither a directory nor an HDF5 file -> return an error */
-        back_end_local = -1;
         if (rc_open != NULL) *rc_open = TREXIO_FILE_ERROR;
         return NULL;
       }
diff --git a/src/templates_hdf5/templator_hdf5.org b/src/templates_hdf5/templator_hdf5.org
index ea1dbed..5d3c41f 100644
--- a/src/templates_hdf5/templator_hdf5.org
+++ b/src/templates_hdf5/templator_hdf5.org
@@ -439,7 +439,7 @@ trexio_hdf5_write_$group_dset$ (trexio_t* const file,
   trexio_hdf5_t* f = (trexio_hdf5_t*) file;
 
   hid_t index_dtype;
-  void* index_p = NULL;
+  const void* index_p;
   uint64_t size_ranked = (uint64_t) size * $group_dset_rank$;
   /* Determine the optimal type for storing indices depending on the size_max (usually mo_num or ao_num) */
   if (size_max < UINT8_MAX) {
@@ -459,7 +459,7 @@ trexio_hdf5_write_$group_dset$ (trexio_t* const file,
     index_p = index;
     index_dtype = H5T_NATIVE_UINT16;
   } else {
-    index_p = (int32_t*) index_sparse;
+    index_p = (const int32_t*) index_sparse;
     index_dtype = H5T_NATIVE_INT32;
   }
 
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 52f47a1..f1c2264 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -13,7 +13,7 @@ set(Tests_text
   io_str_text
   delete_group_text
   overwrite_all_text
-  pre_close.c
+  pre_close
   )
 
 if(ENABLE_HDF5)
@@ -29,7 +29,6 @@ if(ENABLE_HDF5)
     io_str_hdf5
     delete_group_hdf5
     overwrite_all_hdf5
-    pre_close
     )
 
 # Set ${Tests} variable to the complete list of tests.