diff --git a/README.md b/README.md
index 0605a7b..ba22fd1 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,12 @@
 pandas_ods_reader
 ===
 
-Provides a function to read in an ODS file and return a pandas DataFrame
+Provides a function to read in an ODS file and return a pandas DataFrame.
+
+It uses `ezodf` to read in the ods file. If a range is specified in the sheet
+to be imported, it seems that `ezodf` imports empty cells as well. Therefore,
+all completely empty rows and columns are dropped from the DataFrame, before
+it is returned.
 
 Dependencies
 ---
@@ -23,6 +28,6 @@ from pandas_ods_reader import read_ods
 path = "path/to/file.ods"
 sheet_idx = 1
 df1 = read_ods(path, sheet_idx)
-sheet_name = "sheet"
+sheet_name = "sheet1"
 df2 = read_ods(path, sheet_name)
 ```