diff --git a/trader.spec b/trader.spec
index 195aa14..8800067 100644
--- a/trader.spec
+++ b/trader.spec
@@ -17,7 +17,7 @@
 
 Name:           trader
 
-%if %{is_prerelease} = yes
+%if %{is_prerelease} == yes
 Version:        %{fake_version}
 Source0:        ftp://ftp.zap.org.au/pub/trader/unix/prerelease/trader-%{real_version}.tar.gz
 %else