diff --git a/ruby/rubygem-fluentd/rubygem-fluentd.SlackBuild b/ruby/rubygem-fluentd/rubygem-fluentd.SlackBuild
index 9346f4cb52..be655ec839 100644
--- a/ruby/rubygem-fluentd/rubygem-fluentd.SlackBuild
+++ b/ruby/rubygem-fluentd/rubygem-fluentd.SlackBuild
@@ -78,7 +78,7 @@ path = sprintf("%s/%s/gems/%s",
         c["libdir"],
         c["RUBY_INSTALL_NAME"],
         c["ruby_version"])
-sys_gemspecs = Dir.glob(path + "/specifications/*").map {|g| gs = Gem::Specification.load(g); gs.name }
+sys_gemspecs = Dir.glob(path + "/specifications/**/*.gemspec").map {|g| gs = Gem::Specification.load(g); gs.name }
 obj = Gem::Specification.from_yaml($stdin)
 obj.dependencies.each {|dep|
         if not(dep.type == :runtime)