diff --git a/C++.gitignore b/C++.gitignore
index b8bd0267..4581ef2e 100644
--- a/C++.gitignore
+++ b/C++.gitignore
@@ -15,6 +15,7 @@
 
 # Fortran module files
 *.mod
+*.smod
 
 # Compiled Static libraries
 *.lai