diff --git a/libdvdcss/Makefile b/libdvdcss/Makefile
index 4b59956a27..d8c9ecb4e0 100644
--- a/libdvdcss/Makefile
+++ b/libdvdcss/Makefile
@@ -16,10 +16,6 @@ LIB=libdvdcss
 
 .SUFFIXES: .c .o
 
-ifeq ($(OPTFLAGS),)
-OPTFLAGS = -mcpu=pentium -march=pentium -O4
-endif
-
 CFLAGS= -I.. $(OPTFLAGS) -D__USE_UNIX98 -D_GNU_SOURCE \
 	-DHAVE_LIMITS_H -DHAVE_ERRNO_H -DHAVE_INTTYPES_H -DHAVE_UNISTD_H \
 	-D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -DVERSION=\"1.2.9\"
diff --git a/libdvdread/Makefile b/libdvdread/Makefile
index 2fc59fc1db..afce21d535 100644
--- a/libdvdread/Makefile
+++ b/libdvdread/Makefile
@@ -18,10 +18,6 @@ LIB=libdvdread
 
 .SUFFIXES: .c .o
 
-ifeq ($(OPTFLAGS),)
-OPTFLAGS = -mcpu=pentium -march=pentium -O4
-endif
-
 CFLAGS= -I../libdvdcss -I.. $(OPTFLAGS) -D__USE_UNIX98 -D_GNU_SOURCE \
 	-DHAVE_DVDCSS_DVDCSS_H -DSTDC_HEADERS -DHAVE_LIMITS_H \
 	-D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64