diff --git a/firefox.spec b/firefox.spec
index 851d805..761116f 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -33,10 +33,6 @@
 # https://bugzilla.redhat.com/show_bug.cgi?id=1897522
 ExcludeArch: s390x
 
-# Temporary disabled due to webrtc build failures
-# https://bugzilla.redhat.com/show_bug.cgi?id=2113850
-ExcludeArch: ppc64le
-
 # Disabled due to
 # https://bugzilla.redhat.com/show_bug.cgi?id=1966949
 %if 0%{?fedora} > 36
@@ -272,6 +268,9 @@ Patch990:        work-around-GCC-ICE-on-arm.patch
 # Backported WebRTC changes for PipeWire/Wayland screen sharing support
 Patch1000:       libwebrtc-screen-cast-sync-1.patch
 
+# Work around broken moz.build file on ppc64le (mozb#1779545, mozb#1775202)
+Patch1100:       mozilla-1775202.patch
+
 %if %{?system_nss}
 BuildRequires:  pkgconfig(nspr) >= %{nspr_version}
 BuildRequires:  pkgconfig(nss) >= %{nss_version}
@@ -539,6 +538,8 @@ This package contains results of tests executed during build.
 %patch1000 -p1 -b .libwebrtc-screen-cast-sync
 %endif
 
+%patch1100 -p1 -b .ppc-mobzuild
+
 %{__rm} -f .mozconfig
 %{__cp} %{SOURCE10} .mozconfig
 echo "ac_add_options --enable-default-toolkit=cairo-gtk3-wayland" >> .mozconfig
diff --git a/mozilla-1775202.patch b/mozilla-1775202.patch
new file mode 100644
index 0000000..b1748de
--- /dev/null
+++ b/mozilla-1775202.patch
@@ -0,0 +1,17 @@
+diff --git a/third_party/libwebrtc/moz.build b/third_party/libwebrtc/moz.build
+index 8579f8bb3622..d9ca79d4fcb8 100644
+--- a/third_party/libwebrtc/moz.build
++++ b/third_party/libwebrtc/moz.build
+@@ -520,7 +520,10 @@ if CONFIG["CPU_ARCH"] == "ppc64" and CONFIG["OS_TARGET"] == "Linux":
+         "/third_party/libwebrtc/api/audio_codecs/isac/audio_decoder_isac_float_gn",
+         "/third_party/libwebrtc/api/audio_codecs/isac/audio_encoder_isac_float_gn",
+         "/third_party/libwebrtc/modules/audio_coding/isac_c_gn",
+-        "/third_party/libwebrtc/modules/audio_coding/isac_gn"
++        "/third_party/libwebrtc/modules/audio_coding/isac_gn",
++        "/third_party/libwebrtc/modules/desktop_capture/desktop_capture_generic_gn",
++        "/third_party/libwebrtc/modules/desktop_capture/desktop_capture_gn",
++        "/third_party/libwebrtc/modules/desktop_capture/primitives_gn"
+     ]
+ 
+ if CONFIG["CPU_ARCH"] == "x86" and CONFIG["OS_TARGET"] == "Linux":
+