diff --git a/lib/fpm/program.rb b/lib/fpm/program.rb
index 7a6a3576e0..e08de5e62e 100644
--- a/lib/fpm/program.rb
+++ b/lib/fpm/program.rb
@@ -99,6 +99,7 @@ def options(args)
     FPM::Source::Python.flags(FPM::Flags.new(opts, "python", "python source only"),
                               @settings)
     FPM::Target::Deb.flags(FPM::Flags.new(opts, "deb", "deb target only"), @settings)
+    FPM::Target::Rpm.flags(FPM::Flags.new(opts, "rpm", "rpm target only"), @settings)
 
     # Process fpmrc first
     fpmrc(opts)
diff --git a/lib/fpm/target/rpm.rb b/lib/fpm/target/rpm.rb
index 44ad9e6a19..9174ce8725 100644
--- a/lib/fpm/target/rpm.rb
+++ b/lib/fpm/target/rpm.rb
@@ -2,6 +2,14 @@
 require "fpm/util"
 
 class FPM::Target::Rpm < FPM::Package
+  def self.flags(opts, settings)
+    settings.target[:rpm] = "rpm"
+
+    opts.on("--rpmbuild-define DEFINITION", "Pass a --define argument to rpmbuild.") do |define|
+      (settings.target[:rpmbuild_define] ||= []) << define
+    end
+  end
+
   def architecture
     case @architecture
       when nil
@@ -73,12 +81,20 @@ def build!(params)
     # TODO(sissel): Abort if 'rpmbuild' tool not found.
 
     %w(BUILD RPMS SRPMS SOURCES SPECS).each { |d| Dir.mkdir(d) }
-    args = ["rpmbuild", "-ba",
-           "--define", "buildroot #{Dir.pwd}/BUILD",
-           "--define", "_topdir #{Dir.pwd}",
-           "--define", "_sourcedir #{Dir.pwd}",
-           "--define", "_rpmdir #{Dir.pwd}/RPMS",
-           "#{name}.spec"]
+    prefixargs = ["rpmbuild", "-ba",
+      "--define", "buildroot #{Dir.pwd}/BUILD",
+      "--define", "_topdir #{Dir.pwd}",
+      "--define", "_sourcedir #{Dir.pwd}",
+      "--define", "_rpmdir #{Dir.pwd}/RPMS"]
+
+    spec = ["#{name}.spec"]
+
+    if defines.empty?
+      args = prefixargs + spec
+    else
+      args = prefixargs + defines.collect{ |define| ["--define", define] }.flatten + spec
+    end
+
     safesystem(*args)
 
     Dir["#{Dir.pwd}/RPMS/**/*.rpm"].each do |path|