diff --git a/src/shared/install.c b/src/shared/install.c
index dfb60361910..8f9cf4a2f4e 100644
--- a/src/shared/install.c
+++ b/src/shared/install.c
@@ -2723,7 +2723,7 @@ int unit_file_lookup_state(
                 break;
 
         default:
-                assert_not_reached("Unexpect unit file type.");
+                assert_not_reached("Unexpected unit file type.");
         }
 
         *ret = state;