diff --git a/netoik-home.spec b/netoik-home.spec
index 871e6ad..2376eae 100644
--- a/netoik-home.spec
+++ b/netoik-home.spec
@@ -21,10 +21,14 @@ Netoik home page
 %make_install
 
 %post
+# Create symbolic link in order to access generated captcha images.
 ln --symbolic %{_var}/netoik-api/captcha %{_var}/www/%{name}/assets/img/captcha
 
 %preun
-[ $1 -eq 0 ] && rm %{_var}/www/%{name}/assets/img/captcha
+# Remove symbolic link only if uninstalling.
+if [ $1 -eq 0 ]; then
+	rm %{_var}/www/%{name}/assets/img/captcha
+fi
 
 %files
 %define bootstrap_version %(make bootstrap_version)