diff --git a/srcpkgs/firefox/patches/fix-gcc-tests.patch b/srcpkgs/firefox/patches/fix-configure.patch
similarity index 72%
rename from srcpkgs/firefox/patches/fix-gcc-tests.patch
rename to srcpkgs/firefox/patches/fix-configure.patch
index 42993dc70e6..a1947ca00fe 100644
--- a/srcpkgs/firefox/patches/fix-gcc-tests.patch
+++ b/srcpkgs/firefox/patches/fix-configure.patch
@@ -1,5 +1,13 @@
 --- old-configure.orig	2015-05-29 18:30:41.474423097 +0200
 +++ old-configure	2015-05-29 18:30:53.451550589 +0200
+@@ -10386,6 +10386,7 @@
+                  #endif
+ ; return 0; }
+ EOF
++ac_compile='${CC-cc} -c $CFLAGS conftest.$ac_ext 1>&5'
+ if { (eval echo configure:10390: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+   :
+ else
 @@ -11311,8 +11311,8 @@ ac_have_llvm_pr8927="no"
  ac_ext=c
  # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
diff --git a/srcpkgs/firefox/template b/srcpkgs/firefox/template
index 91a8969b6ce..f61f1f5ea84 100644
--- a/srcpkgs/firefox/template
+++ b/srcpkgs/firefox/template
@@ -1,13 +1,13 @@
 # Template build file for 'firefox'.
 pkgname=firefox
-version=50.1.0
-revision=2
+version=51.0
+revision=1
 short_desc="Mozilla Firefox web browser"
 maintainer="Juan RP <xtraeme@voidlinux.eu>"
 homepage="https://www.mozilla.org/firefox/"
 license="MPL-2.0, GPL-2, LGPL-2.1"
 distfiles="${MOZILLA_SITE}/${pkgname}/releases/${version}/source/${pkgname}-${version}.source.tar.xz"
-checksum=54bb9bccbf9eed0c7715ae7f45330bf41ce24b756f5fdecb380e06709a6ac5a4
+checksum=6535b7a69c28e3613a815801aa2d9416d133dd92e17e7c8eb68d9776ce9eebea
 
 only_for_archs="i686 i686-musl x86_64 x86_64-musl"
 nopie=yes