diff --git a/src/imap.c b/src/imap.c
index 1ca8bd0..e534c42 100644
--- a/src/imap.c
+++ b/src/imap.c
@@ -129,7 +129,7 @@
    if(data->recursive_folder_names == 1){
 
       // trim the main folder name from the stored value in folder table
-      if(data->import->trim_folder_name == 1 && main_folder){
+      if(data->import->trim_folder_name == 1 && main_folder && strlen(main_folder) < strlen(folder)){
          folder += strlen(main_folder);
       }