diff --git a/.gitignore b/.gitignore
index 74b8ba81f..edeee74a0 100755
--- a/.gitignore
+++ b/.gitignore
@@ -17,10 +17,11 @@
 *.la
 *.lo
 
-# Shared objects (inc. Windows DLLs)
+# Shared objects (inc. Windows DLLs), except those in IDO
 *.dll
 *.so
 *.so.*
+!/tools/ido5.3_compiler/usr/lib/*.so*
 *.dylib
 
 # Executables