diff --git a/README.md b/README.md
index f9e4fb8..b8099e5 100644
--- a/README.md
+++ b/README.md
@@ -1 +1 @@
-Library AF Mosiac
+Library AF Mosaic
diff --git a/lib_afc_mosaic/afs3exception.py b/lib_afc_mosaic/afs3exception.py
index fd974a0..1611e20 100644
--- a/lib_afc_mosaic/afs3exception.py
+++ b/lib_afc_mosaic/afs3exception.py
@@ -1,5 +1,5 @@
 """
-AF Mosiac exceptions
+AF Mosaic exceptions
 """
 
 class AFCMUniverseMapFileError(Exception):