diff --git a/src/.cvsignore b/src/.cvsignore
index 5b936e030..29a648189 100644
--- a/src/.cvsignore
+++ b/src/.cvsignore
@@ -11,4 +11,5 @@ ngspice
 ngnutmeg
 ngmultidec
 spinit
+ngspice.idx
 
diff --git a/src/ngspice.idx b/src/ngspice.idx
deleted file mode 100644
index 0d02a610d..000000000
Binary files a/src/ngspice.idx and /dev/null differ