diff --git a/rubygem-transaction-simple.spec b/rubygem-transaction-simple.spec
index 7d201e0..042b7b4 100644
--- a/rubygem-transaction-simple.spec
+++ b/rubygem-transaction-simple.spec
@@ -16,8 +16,8 @@ License: MIT
 URL: http://trans-simple.rubyforge.org/
 Source0: http://rubygems.org/downloads/%{gem_name}-%{version}.gem
 Requires: rubygems
-%if 0%{?rhel} == 6 || 0%{?fedora} < 17
-Requires: ruby(release)
+%if 0%{?rhel} == 6
+Requires: ruby(abi) = 1.8
 %else
 %if 0%{?fedora} >= 19
 Requires: ruby(release)