diff --git a/trinity-apps/k3b/k3b-14.1.0.ebuild b/trinity-apps/k3b/k3b-14.1.0.ebuild
index 62439774..443c3828 100644
--- a/trinity-apps/k3b/k3b-14.1.0.ebuild
+++ b/trinity-apps/k3b/k3b-14.1.0.ebuild
@@ -1,5 +1,5 @@
-# Copyright 1999-2023 Gentoo Authors
-# Copyright 2020-2023 The Trinity Desktop Project
+# Copyright 2024 Gentoo Authors
+# Copyright 2024 The Trinity Desktop Project
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI="8"
@@ -16,7 +16,7 @@ SLOT="14"
 if [[ ${PV} != *9999* ]] ; then
 	KEYWORDS="~amd64 ~arm64 ~x86"
 fi
-IUSE="alsa css dvd dvdr emovix encode debug ffmpeg ffmpeg_all_codecs flac
+IUSE="alsa css dvd dvdr emovix encode debug ffmpeg ffmpeg-all-codecs flac
 +handbook mp3 sndfile taglib vcd vorbis"
 
 DEPEND="
@@ -58,7 +58,7 @@ src_configure() {
 		-DWITH_DEBUG="$(usex debug)"
 		-DWITH_ALSA="$(usex alsa)"
 		-DWITH_FFMPEG="$(usex ffmpeg)"
-		-DWITH_FFMPEG_ALL_CODECS="$(usex ffmpeg_all_codecs)"
+		-DWITH_FFMPEG_ALL_CODECS="$(usex ffmpeg-all-codecs)"
 		-DWITH_FLAC="$(usex flac)"
 		-DWITH_SNDFILE="$(usex sndfile)"
 		-DWITH_TAGLIB="$(usex taglib)"
diff --git a/trinity-apps/k3b/k3b-14.1.1.ebuild b/trinity-apps/k3b/k3b-14.1.1.ebuild
index 62439774..443c3828 100644
--- a/trinity-apps/k3b/k3b-14.1.1.ebuild
+++ b/trinity-apps/k3b/k3b-14.1.1.ebuild
@@ -1,5 +1,5 @@
-# Copyright 1999-2023 Gentoo Authors
-# Copyright 2020-2023 The Trinity Desktop Project
+# Copyright 2024 Gentoo Authors
+# Copyright 2024 The Trinity Desktop Project
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI="8"
@@ -16,7 +16,7 @@ SLOT="14"
 if [[ ${PV} != *9999* ]] ; then
 	KEYWORDS="~amd64 ~arm64 ~x86"
 fi
-IUSE="alsa css dvd dvdr emovix encode debug ffmpeg ffmpeg_all_codecs flac
+IUSE="alsa css dvd dvdr emovix encode debug ffmpeg ffmpeg-all-codecs flac
 +handbook mp3 sndfile taglib vcd vorbis"
 
 DEPEND="
@@ -58,7 +58,7 @@ src_configure() {
 		-DWITH_DEBUG="$(usex debug)"
 		-DWITH_ALSA="$(usex alsa)"
 		-DWITH_FFMPEG="$(usex ffmpeg)"
-		-DWITH_FFMPEG_ALL_CODECS="$(usex ffmpeg_all_codecs)"
+		-DWITH_FFMPEG_ALL_CODECS="$(usex ffmpeg-all-codecs)"
 		-DWITH_FLAC="$(usex flac)"
 		-DWITH_SNDFILE="$(usex sndfile)"
 		-DWITH_TAGLIB="$(usex taglib)"
diff --git a/trinity-apps/k3b/k3b-9999.ebuild b/trinity-apps/k3b/k3b-9999.ebuild
index e7d2b8a1..443c3828 100644
--- a/trinity-apps/k3b/k3b-9999.ebuild
+++ b/trinity-apps/k3b/k3b-9999.ebuild
@@ -1,5 +1,5 @@
-# Copyright 1999-2020 Gentoo Authors
-# Copyright 2020 The Trinity Desktop Project
+# Copyright 2024 Gentoo Authors
+# Copyright 2024 The Trinity Desktop Project
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI="8"
@@ -16,7 +16,7 @@ SLOT="14"
 if [[ ${PV} != *9999* ]] ; then
 	KEYWORDS="~amd64 ~arm64 ~x86"
 fi
-IUSE="alsa css dvd dvdr emovix encode debug ffmpeg ffmpeg_all_codecs flac
+IUSE="alsa css dvd dvdr emovix encode debug ffmpeg ffmpeg-all-codecs flac
 +handbook mp3 sndfile taglib vcd vorbis"
 
 DEPEND="
@@ -58,7 +58,7 @@ src_configure() {
 		-DWITH_DEBUG="$(usex debug)"
 		-DWITH_ALSA="$(usex alsa)"
 		-DWITH_FFMPEG="$(usex ffmpeg)"
-		-DWITH_FFMPEG_ALL_CODECS="$(usex ffmpeg_all_codecs)"
+		-DWITH_FFMPEG_ALL_CODECS="$(usex ffmpeg-all-codecs)"
 		-DWITH_FLAC="$(usex flac)"
 		-DWITH_SNDFILE="$(usex sndfile)"
 		-DWITH_TAGLIB="$(usex taglib)"
diff --git a/trinity-apps/k3b/metadata.xml b/trinity-apps/k3b/metadata.xml
index 2c8f50bb..fc564125 100644
--- a/trinity-apps/k3b/metadata.xml
+++ b/trinity-apps/k3b/metadata.xml
@@ -7,6 +7,6 @@
   </maintainer>
   <use>
     <flag name="emovix">Enable burning support for eMoviX images</flag>
-    <flag name="ffmpeg_all_codecs">Enable WITH_FFMPEG_ALL_CODECS cmake flag (no additional dependencies)</flag>
+    <flag name="ffmpeg-all-codecs">Enable WITH_FFMPEG_ALL_CODECS cmake flag (no additional dependencies)</flag>
   </use>
 </pkgmetadata>