diff --git a/htsinfer/get_library_stats.py b/htsinfer/get_library_stats.py
index ff2bc57..6413586 100644
--- a/htsinfer/get_library_stats.py
+++ b/htsinfer/get_library_stats.py
@@ -60,14 +60,14 @@ def evaluate(self) -> ResultsStats:
             self.fastq_get_stats_read_length(fastq=self.paths[0])
         )
         # process file 2
-        LOGGER.info(f"Obtaining statistics for file: {self.paths[0]}")
+        LOGGER.info(f"Obtaining statistics for file: {self.paths[1]}")
         if self.paths[1] is not None:
             (stats.file_2.read_length.min,
              stats.file_2.read_length.max,
              stats.file_2.read_length.mean,
              stats.file_2.read_length.median,
              stats.file_2.read_length.mode) = (
-                self.fastq_get_stats_read_length(fastq=self.paths[0])
+                self.fastq_get_stats_read_length(fastq=self.paths[1])
             )
 
         return stats
diff --git a/htsinfer/models.py b/htsinfer/models.py
index 8db42f6..6b8c2f9 100644
--- a/htsinfer/models.py
+++ b/htsinfer/models.py
@@ -95,7 +95,7 @@ class ReadLength(BaseModel):
     min: Optional[int] = None
     max: Optional[int] = None
     mean: Optional[float] = None
-    median: Optional[float] = None
+    median: Optional[int] = None
     mode: Optional[int] = None