diff --git a/dna_file_reader.py b/dna_file_reader.py
index 07cf8a046040d4c97d86669f75c1e287d5eebeda..c433a34975822fd9356fe6137ad4d79eb577c2c9 100755
--- a/dna_file_reader.py
+++ b/dna_file_reader.py
@@ -40,7 +40,7 @@ def read_fasta(fasta_file_path: str) -> dict:
             sequence_dict[sequence_name] = sequence
             
         else:
-            print("fasta format error :",line)
+            print("fasta format error in file",fasta_file_path,":",line)
             exit(1)
     fasta_file.close()
     return sequence_dict
@@ -104,7 +104,7 @@ def read_fastq(fastq_file_path: str, use_score=False) -> dict:
             else:
                 sequence_dict[sequence_name] = sequence
         else:
-            print("fastq format error :",line)
+            print("fastq format error in file",fastq_file_path,":",line)
             exit(1)
     fastq_file.close()
     return sequence_dict