diff --git a/Makefile-gdb.patch b/Makefile-gdb.patch
deleted file mode 100644
index bb5b977..0000000
--- a/Makefile-gdb.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-Index: brise-0.35+git20140810/Makefile
-===================================================================
---- brise-0.35+git20140810.orig/Makefile
-+++ brise-0.35+git20140810/Makefile
-@@ -18,7 +18,7 @@ all:
- 	@cp symbols.yaml ${DATA}
- 	@cp preset/*.yaml  ${DATA}
- 	@cp supplement/*.yaml  ${DATA}
--	rime_deployer --build  ${DATA}
-+	gdb --eval-command='set height 0' --eval-command='run' --eval-command='bt' --eval-command='quit' --args rime_deployer --build  ${DATA}
- 
- # deprecated
- essay.kct:
diff --git a/brise.spec b/brise.spec
index 6bd315f..a5ce535 100644
--- a/brise.spec
+++ b/brise.spec
@@ -24,23 +24,8 @@ License:        GPL-3.0+
 Group:          System/I18n/Chinese
 Url:            https://github.com/lotem/brise
 Source:         brise-%{version}.tar.gz
-Patch:	Makefile-gdb.patch
 BuildRequires:  kyotocabinet
 BuildRequires:  librime-devel
-# debug on OBS
-BuildRequires:	gdb
-#BuildRequires:	glibc-debuginfo
-#BuildRequires:	rime-debuginfo librime0-debuginfo 	
-#BuildRequires:	libboost_system1_53_0-debuginfo
-#BuildRequires:	libglog0-debuginfo
-#BuildRequires:	libstdc++6-debuginfo libgcc_s1-debuginfo
-#BuildRequires:	libboost_filesystem1_53_0-debuginfo
-#BuildRequires:	libboost_regex1_53_0-debuginfo
-#BuildRequires:	libboost_signals1_53_0-debuginfo
-#BuildRequires:	libboost_thread1_53_0-debuginfo
-#BuildRequires:	libyaml-cpp0_5-debuginfo
-#BuildRequires:	libkyotocabinet16-debuginfo
-#BuildRequires:	libicu51_2-debuginfo libz1-debuginfo
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
 %description
@@ -52,10 +37,9 @@ Brise is the input schemas collection of Rime.
 
 %prep
 %setup -q
-%patch -p1
 
 %build
-make -j1
+make %{?_smp_mflags}
 
 %install
 make DESTDIR=%{buildroot} install %{?_smp_mflags}