diff --git a/audio/gstreamer-plugins-fluendo-mp3/Makefile b/audio/gstreamer-plugins-fluendo-mp3/Makefile
index 5fa1ca97bc39..28dc7121df84 100644
--- a/audio/gstreamer-plugins-fluendo-mp3/Makefile
+++ b/audio/gstreamer-plugins-fluendo-mp3/Makefile
@@ -14,6 +14,7 @@ DISTNAME=	gst-fluendo-mp3-${PORTVERSION}
 MAINTAINER=	multimedia@FreeBSD.org
 COMMENT=	Mp3 gstreamer plugin from fluendo
 
+CFLAGS:=	${CFLAGS} -O2
 USE_GSTREAMER=	yes
 GNU_CONFIGURE=	yes
 PLIST_FILES=	lib/gstreamer-0.10/libgstflump3dec.a \
diff --git a/audio/gstreamer-plugins-moodbar/Makefile b/audio/gstreamer-plugins-moodbar/Makefile
index 19266b7d3bb8..65e4eb1f4d1f 100644
--- a/audio/gstreamer-plugins-moodbar/Makefile
+++ b/audio/gstreamer-plugins-moodbar/Makefile
@@ -19,6 +19,7 @@ COMMENT=	Shows the "moods" of audio tracks in Amarok
 LIB_DEPENDS=	fftw3f:${PORTSDIR}/math/fftw3-float \
 		fftw3:${PORTSDIR}/math/fftw3
 
+CFLAGS:=	${CFLAGS} -O2
 USE_GSTREAMER=	yes good
 USE_GMAKE=	yes
 USE_AUTOTOOLS=	libtool:15
diff --git a/multimedia/gstreamer-plugins-fluendo-mpegdemux/Makefile b/multimedia/gstreamer-plugins-fluendo-mpegdemux/Makefile
index 0208d8a5a022..df2be38d65fe 100644
--- a/multimedia/gstreamer-plugins-fluendo-mpegdemux/Makefile
+++ b/multimedia/gstreamer-plugins-fluendo-mpegdemux/Makefile
@@ -14,6 +14,7 @@ DISTNAME=	gst-fluendo-mpegdemux-${PORTVERSION}
 MAINTAINER=	multimedia@FreeBSD.org
 COMMENT=	MPEG2 demuxing gstreamer plugin from fluendo
 
+CFLAGS:=	${CFLAGS} -O2
 USE_GSTREAMER=	yes
 GNU_CONFIGURE=	yes
 PLIST_FILES=	lib/gstreamer-0.10/libgstflumpegdemux.a \
diff --git a/multimedia/gstreamer-plugins-gnonlin/Makefile b/multimedia/gstreamer-plugins-gnonlin/Makefile
index ca1b7ede8642..f0bbd0e174e2 100644
--- a/multimedia/gstreamer-plugins-gnonlin/Makefile
+++ b/multimedia/gstreamer-plugins-gnonlin/Makefile
@@ -15,6 +15,7 @@ DISTNAME=	gnonlin-${PORTVERSION}
 MAINTAINER=	multimedia@FreeBSD.org
 COMMENT=	Gstreamer lib for writing non-linear audio and video
 
+CFLAGS:=	${CFLAGS} -O2
 USE_BZIP2=	yes
 USE_GNOME=	gnometarget
 GNU_CONFIGURE=	yes