diff --git a/libidn2.spec b/libidn2.spec
index fc00a15..869b8b9 100644
--- a/libidn2.spec
+++ b/libidn2.spec
@@ -81,7 +81,7 @@ rm -f $RPM_BUILD_ROOT%{_datadir}/info/dir
 /sbin/install-info %{_infodir}/%{name}.info.gz %{_infodir}/dir || :            
 
 %preun -n idn2            
-if [ $1 = 0 ]; then            
+if [ $1 -eq 0 ]; then            
   /sbin/install-info --delete %{_infodir}/%{name}.info.gz %{_infodir}/dir || :            
 fi
 %endif