diff --git a/libsmallrna/libsmallrna.pyx b/libsmallrna/libsmallrna.pyx
index 98844baf0ae4ced67ad4ce08a7e4fcb0105f9f8b..dc7661bf45d7fc1d7148e3116640fceb7570dcfc 100755
--- a/libsmallrna/libsmallrna.pyx
+++ b/libsmallrna/libsmallrna.pyx
@@ -151,7 +151,9 @@ JOINED_SMALL_TYPES = [
     *[f"si_{suffix}" for suffix in SI_SUFFIXES],
     *[f"siu_{suffix}" for suffix in SI_SUFFIXES],
     # TODO (09/11/2021): change this name after including tRF in this category
-    f"pimi{SI_MIN}G"]
+    f"pimi{SI_MIN}G",
+    # Note (14/02/2022): Actually added a new category.
+    f"pimi{SI_MIN}GtRF"]
 
 
 def type2RNA(small_types):