diff --git a/src/trexio_text.c b/src/trexio_text.c
index 5b795f0..b27eef5 100644
--- a/src/trexio_text.c
+++ b/src/trexio_text.c
@@ -438,7 +438,7 @@ rdm_t* trexio_text_read_rdm(trexio_text_t* file) {
   if (file->parent.mode == 'w') {
     rdm->file = fopen(file_name,"a");  
   } else {
-    rdm->file = fopen(file_name,"");  
+    rdm->file = fopen(file_name,"r");  
   }
   free(file_name);
   file->rdm = rdm ;
diff --git a/src/trexio_text.org b/src/trexio_text.org
index 208cd5e..3a91064 100644
--- a/src/trexio_text.org
+++ b/src/trexio_text.org
@@ -99,6 +99,7 @@ typedef struct trexio_text_s {
 
     #+end_src
 
+*** Init/deinit functions
 
     #+begin_src c :tangle trexio_text.h
 trexio_exit_code trexio_text_init(trexio_t* file);
@@ -611,7 +612,7 @@ rdm_t* trexio_text_read_rdm(trexio_text_t* file) {
   if (file->parent.mode == 'w') {
     rdm->file = fopen(file_name,"a");  
   } else {
-    rdm->file = fopen(file_name,"");  
+    rdm->file = fopen(file_name,"r");  
   }
   free(file_name);
   file->rdm = rdm ;