diff --git a/src/rcx_tk/process_metadata_file.py b/src/rcx_tk/process_metadata_file.py
index 7f38709..6e5cf4b 100644
--- a/src/rcx_tk/process_metadata_file.py
+++ b/src/rcx_tk/process_metadata_file.py
@@ -93,12 +93,7 @@ def validateInjectionOrder(df: pd.DataFrame) -> bool:
     Returns:
         bool: Whether the injectionOrder is integer.
     """
-    #res = all(x.is_integer() for x in df['injectionOrder'])
-    res = df['injectionOrder'].dtypes
-    if res == int64:
-        return(True)
-    else:
-        return(False)
+    return(df['injectionOrder'].dtypes == int64)
 
 def derive_additional_metadata(df: pd.DataFrame) -> pd.DataFrame:
     """Derives additional metadata columns.