diff --git a/media-radio/flrig/files/flrig-2.0.04-stdint.patch b/media-radio/flrig/files/flrig-2.0.04-stdint.patch
new file mode 100644
index 0000000000000..9acd6ffb4dbcb
--- /dev/null
+++ b/media-radio/flrig/files/flrig-2.0.04-stdint.patch
@@ -0,0 +1,13 @@
+# fix build with clang++ (bug #921405)
+diff --git a/src/widgets/FreqControl.cxx b/src/widgets/FreqControl.cxx
+index 2b1734b..e59dc9c 100644
+--- a/src/widgets/FreqControl.cxx
++++ b/src/widgets/FreqControl.cxx
+@@ -35,6 +35,7 @@
+ #endif
+ 
+ #include <string.h>
++#include <stdint.h>
+ 
+ #include "FreqControl.h"
+ #include "gettext.h"
diff --git a/media-radio/flrig/flrig-2.0.04.ebuild b/media-radio/flrig/flrig-2.0.04.ebuild
index a07e501860cf4..0a9e7a5c39ab7 100644
--- a/media-radio/flrig/flrig-2.0.04.ebuild
+++ b/media-radio/flrig/flrig-2.0.04.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -23,7 +23,10 @@ RDEPEND="x11-libs/libX11
 DEPEND="${RDEPEND}
 	sys-devel/gettext"
 
-PATCHES=( "${FILESDIR}/${PN}-1.4.4-musl.patch" )
+PATCHES=(
+		"${FILESDIR}/${PN}-1.4.4-musl.patch"
+		"${FILESDIR}/${PN}-2.0.04-stdint.patch"
+	)
 
 src_prepare() {
 	eapply ${PATCHES[@]}
diff --git a/media-radio/flrig/flrig-2.0.05.ebuild b/media-radio/flrig/flrig-2.0.05.ebuild
index a5bc7dbf08a2e..50fe129ea6b17 100644
--- a/media-radio/flrig/flrig-2.0.05.ebuild
+++ b/media-radio/flrig/flrig-2.0.05.ebuild
@@ -23,7 +23,10 @@ RDEPEND="x11-libs/libX11
 DEPEND="${RDEPEND}
 	sys-devel/gettext"
 
-PATCHES=( "${FILESDIR}/${PN}-2.0.05-musl.patch" )
+PATCHES=(
+		"${FILESDIR}/${PN}-2.0.05-musl.patch"
+		"${FILESDIR}/${PN}-2.0.04-stdint.patch"
+	)
 
 src_prepare() {
 	eapply ${PATCHES[@]}