diff --git a/src/add-ons/media/plugins/vorbis/libvorbis/Jamfile b/src/add-ons/media/plugins/vorbis/libvorbis/Jamfile
index 70bb72ab20..73c9ae8465 100644
--- a/src/add-ons/media/plugins/vorbis/libvorbis/Jamfile
+++ b/src/add-ons/media/plugins/vorbis/libvorbis/Jamfile
@@ -3,7 +3,7 @@ SubDir HAIKU_TOP src add-ons media plugins vorbis libvorbis ;
 SubDirSysHdrs [ FDirName $(SUBDIR) .. .. ogg libogg ] ;
 
 SubDirCcFlags -DPACKAGE=\\\"libvorbis\\\" -DVERSION=\\\"1.0\\\" -DHAVE_ALLOCA_H=1 -DHAVE_ALLOCA=1 -DHAVE_SQRTF=1 -DHAVE_LOGF=1 -DHAVE_EXPF=1 -DHAVE_ACOSF=1 -DHAVE_ATANF=1 -DHAVE_FREXPF=1 -DHAVE_RINTF=1 -DHAVE_FLOORF=1 ;
-SubDirCcFlags -O20 -D__NO_MATH_INLINES -fsigned-char -DPIC -w ;
+SubDirCcFlags -D__NO_MATH_INLINES -fsigned-char -DPIC -w ;
 
 StaticLibrary libvorbis.a :
 	analysis.c