diff --git a/ruby.changes b/ruby.changes
index 2c56dd0..105364d 100644
--- a/ruby.changes
+++ b/ruby.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Jul  4 08:59:02 UTC 2012 - saschpe@suse.de
+
+- Fix old-style %gem_install macro (missing parameter)
+
 -------------------------------------------------------------------
 Tue Jul  3 08:02:01 UTC 2012 - saschpe@suse.de
 
diff --git a/ruby.macros b/ruby.macros
index 164a7a4..03e8044 100644
--- a/ruby.macros
+++ b/ruby.macros
@@ -55,8 +55,8 @@ cd $GEMSPEC_SOURCE_DIR && %{gem_binary} build --verbose *.gemspec \
 # building the upstream gem directly in $RPM_BUILD_ROOT without unpacking to %{_builddir} first.
 #
 %gem_install() \
-if [ %# -eq 1 ]; then \
-    %{gem_binary} install --verbose --local --build-root=%{buildroot} \
+if [ %# -ge 1 ]; then \
+    %{gem_binary} install --verbose --local --build-root=%{buildroot} %* \
 else \
     GEM_FILE=`find . -maxdepth 2 -type f -name "%{mod_name}-%{version}.gem"` \
     %{gem_binary} install --verbose --local --bindir %{buildroot}%{_bindir} --install-dir %{buildroot}%{_libdir}/ruby/gems/%{rb_ver} $GEM_FILE \