diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0e047e7..065f951 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,6 @@
 # v0.1.3
+## Changed
+- jubeat analyser : Use "EXT" instead of "?" as the fallback difficulty name when loading
 ## Fixed
 - memon : Fix TypeError that would occur when trying to convert to memon
 
diff --git a/jubeatools/formats/jubeat_analyser/memo/load.py b/jubeatools/formats/jubeat_analyser/memo/load.py
index c998c80..347b25e 100644
--- a/jubeatools/formats/jubeat_analyser/memo/load.py
+++ b/jubeatools/formats/jubeat_analyser/memo/load.py
@@ -318,7 +318,7 @@ def _load_memo_file(lines: List[str]) -> Song:
     )
     charts = {
         parser.difficulty
-        or "?": Chart(
+        or "EXT": Chart(
             level=Decimal(parser.level),
             timing=timing,
             notes=sorted(parser.notes(), key=lambda n: (n.time, n.position)),
diff --git a/jubeatools/formats/jubeat_analyser/memo1/load.py b/jubeatools/formats/jubeat_analyser/memo1/load.py
index 69122cc..e52b14b 100644
--- a/jubeatools/formats/jubeat_analyser/memo1/load.py
+++ b/jubeatools/formats/jubeat_analyser/memo1/load.py
@@ -312,7 +312,7 @@ def _load_memo1_file(lines: List[str]) -> Song:
     )
     charts = {
         parser.difficulty
-        or "?": Chart(
+        or "EXT": Chart(
             level=Decimal(parser.level),
             timing=timing,
             notes=sorted(parser.notes(), key=lambda n: (n.time, n.position)),
diff --git a/jubeatools/formats/jubeat_analyser/memo2/load.py b/jubeatools/formats/jubeat_analyser/memo2/load.py
index 3ee0d44..47d364d 100644
--- a/jubeatools/formats/jubeat_analyser/memo2/load.py
+++ b/jubeatools/formats/jubeat_analyser/memo2/load.py
@@ -448,7 +448,7 @@ def _load_memo2_file(lines: List[str]) -> Song:
     )
     charts = {
         parser.difficulty
-        or "?": Chart(
+        or "EXT": Chart(
             level=Decimal(parser.level),
             timing=timing,
             notes=sorted(parser.notes(), key=lambda n: (n.time, n.position)),
diff --git a/jubeatools/formats/jubeat_analyser/mono_column/load.py b/jubeatools/formats/jubeat_analyser/mono_column/load.py
index caf1e9b..9eeed44 100644
--- a/jubeatools/formats/jubeat_analyser/mono_column/load.py
+++ b/jubeatools/formats/jubeat_analyser/mono_column/load.py
@@ -298,7 +298,7 @@ def _load_mono_column_file(lines: List[str]) -> Song:
     )
     charts = {
         parser.difficulty
-        or "?": Chart(
+        or "EXT": Chart(
             level=Decimal(parser.level),
             timing=timing,
             notes=sorted(parser.notes(), key=lambda n: (n.time, n.position)),