diff --git a/recipes/TIMIT/ASR/CTC/hparams/train.yaml b/recipes/TIMIT/ASR/CTC/hparams/train.yaml
index 7ae4498ffc..78d7d28a37 100644
--- a/recipes/TIMIT/ASR/CTC/hparams/train.yaml
+++ b/recipes/TIMIT/ASR/CTC/hparams/train.yaml
@@ -19,6 +19,7 @@ train_annotation: !ref <output_folder>/train.json
 valid_annotation: !ref <output_folder>/dev.json
 test_annotation: !ref <output_folder>/test.json
 skip_prep: False # Skip data preparation
+uppercase: False # Must be True when the TIMIT dataset is in the upper-case version
 
 # Training parameters
 number_of_epochs: 50
diff --git a/recipes/TIMIT/ASR/CTC/train.py b/recipes/TIMIT/ASR/CTC/train.py
index f0c6974172..75f7207c1f 100644
--- a/recipes/TIMIT/ASR/CTC/train.py
+++ b/recipes/TIMIT/ASR/CTC/train.py
@@ -227,6 +227,7 @@ def text_pipeline(phn):
             "save_json_valid": hparams["valid_annotation"],
             "save_json_test": hparams["test_annotation"],
             "skip_prep": hparams["skip_prep"],
+            "uppercase": hparams["uppercase"],
         },
     )
 
diff --git a/recipes/TIMIT/ASR/seq2seq/hparams/train.yaml b/recipes/TIMIT/ASR/seq2seq/hparams/train.yaml
index 1fd0b81d9d..95f0ab4ee4 100644
--- a/recipes/TIMIT/ASR/seq2seq/hparams/train.yaml
+++ b/recipes/TIMIT/ASR/seq2seq/hparams/train.yaml
@@ -20,6 +20,7 @@ train_annotation: !ref <output_folder>/train.json
 valid_annotation: !ref <output_folder>/dev.json
 test_annotation: !ref <output_folder>/test.json
 skip_prep: False # Skip data preparation
+uppercase: False # Must be True when the TIMIT dataset is in the upper-case version
 
 # Training parameters
 number_of_epochs: 50
diff --git a/recipes/TIMIT/ASR/seq2seq/hparams/train_with_wav2vec2.yaml b/recipes/TIMIT/ASR/seq2seq/hparams/train_with_wav2vec2.yaml
index becd0a0682..1c8018e877 100644
--- a/recipes/TIMIT/ASR/seq2seq/hparams/train_with_wav2vec2.yaml
+++ b/recipes/TIMIT/ASR/seq2seq/hparams/train_with_wav2vec2.yaml
@@ -21,6 +21,7 @@ train_annotation: !ref <output_folder>/train.json
 valid_annotation: !ref <output_folder>/dev.json
 test_annotation: !ref <output_folder>/test.json
 skip_prep: False # Skip data preparation
+uppercase: False # Must be True when the TIMIT dataset is in the upper-case version
 
 # Training parameters
 number_of_epochs: 20
diff --git a/recipes/TIMIT/ASR/seq2seq/train.py b/recipes/TIMIT/ASR/seq2seq/train.py
index d467fcd5a4..98978f6fb4 100644
--- a/recipes/TIMIT/ASR/seq2seq/train.py
+++ b/recipes/TIMIT/ASR/seq2seq/train.py
@@ -325,6 +325,7 @@ def text_pipeline(phn):
             "save_json_valid": hparams["valid_annotation"],
             "save_json_test": hparams["test_annotation"],
             "skip_prep": hparams["skip_prep"],
+            "uppercase": hparams["uppercase"],
         },
     )
 
diff --git a/recipes/TIMIT/ASR/seq2seq/train_with_wav2vec2.py b/recipes/TIMIT/ASR/seq2seq/train_with_wav2vec2.py
index eeeb1fedcb..60d9d8b694 100644
--- a/recipes/TIMIT/ASR/seq2seq/train_with_wav2vec2.py
+++ b/recipes/TIMIT/ASR/seq2seq/train_with_wav2vec2.py
@@ -362,6 +362,7 @@ def text_pipeline(phn):
             "save_json_valid": hparams["valid_annotation"],
             "save_json_test": hparams["test_annotation"],
             "skip_prep": hparams["skip_prep"],
+            "uppercase": hparams["uppercase"],
         },
     )
 
diff --git a/recipes/TIMIT/ASR/transducer/hparams/train.yaml b/recipes/TIMIT/ASR/transducer/hparams/train.yaml
index 09594f5af8..10022bd4cd 100644
--- a/recipes/TIMIT/ASR/transducer/hparams/train.yaml
+++ b/recipes/TIMIT/ASR/transducer/hparams/train.yaml
@@ -22,6 +22,7 @@ train_annotation: !ref <data_folder>/train.json
 valid_annotation: !ref <data_folder>/dev.json
 test_annotation: !ref <data_folder>/test.json
 skip_prep: False # Skip data preparation
+uppercase: False # Must be True when the TIMIT dataset is in the upper-case version
 
 # Training parameters
 number_of_epochs: 50
diff --git a/recipes/TIMIT/ASR/transducer/hparams/train_wav2vec.yaml b/recipes/TIMIT/ASR/transducer/hparams/train_wav2vec.yaml
index 7b9b3ed3f2..57a472821f 100644
--- a/recipes/TIMIT/ASR/transducer/hparams/train_wav2vec.yaml
+++ b/recipes/TIMIT/ASR/transducer/hparams/train_wav2vec.yaml
@@ -26,6 +26,7 @@ train_annotation: !ref <data_folder>/train.json
 valid_annotation: !ref <data_folder>/dev.json
 test_annotation: !ref <data_folder>/test.json
 skip_prep: False # Skip data preparation
+uppercase: False # Must be True when the TIMIT dataset is in the upper-case version
 
 # Training parameters
 number_of_epochs: 20
diff --git a/recipes/TIMIT/ASR/transducer/train.py b/recipes/TIMIT/ASR/transducer/train.py
index 630e1ba033..b8db3349c1 100644
--- a/recipes/TIMIT/ASR/transducer/train.py
+++ b/recipes/TIMIT/ASR/transducer/train.py
@@ -260,6 +260,7 @@ def text_pipeline(phn):
             "save_json_valid": hparams["valid_annotation"],
             "save_json_test": hparams["test_annotation"],
             "skip_prep": hparams["skip_prep"],
+            "uppercase": hparams["uppercase"],
         },
     )
 
diff --git a/recipes/TIMIT/ASR/transducer/train_wav2vec.py b/recipes/TIMIT/ASR/transducer/train_wav2vec.py
index 6e05d37afd..0222452919 100644
--- a/recipes/TIMIT/ASR/transducer/train_wav2vec.py
+++ b/recipes/TIMIT/ASR/transducer/train_wav2vec.py
@@ -335,6 +335,7 @@ def text_pipeline(phn):
             "save_json_valid": hparams["valid_annotation"],
             "save_json_test": hparams["test_annotation"],
             "skip_prep": hparams["skip_prep"],
+            "uppercase": hparams["uppercase"],
         },
     )