diff --git a/pkgs/development/libraries/fontconfig/default.nix b/pkgs/development/libraries/fontconfig/default.nix
index 14983b744df..0130ee2a014 100644
--- a/pkgs/development/libraries/fontconfig/default.nix
+++ b/pkgs/development/libraries/fontconfig/default.nix
@@ -28,17 +28,7 @@ stdenv.mkDerivation rec {
       src = ./config-compat.patch;
       inherit configVersion;
     })
-    (fetchpatch {
-      name = "glibc-2.25.diff";
-      url = "https://cgit.freedesktop.org/fontconfig/patch/?id=1ab5258f7c";
-      sha256 = "0x2a4qx51j3gqcp1kp4lisdzmhrkw1zw0r851d82ksgjlc0vkbaz";
-    })
   ];
-  # additionally required for the glibc-2.25 patch; avoid requiring gperf
-  postPatch = ''
-    sed s/CHAR_WIDTH/CHARWIDTH/g -i src/fcobjshash.{h,gperf}
-    touch src/*
-  '';
 
   outputs = [ "bin" "dev" "lib" "out" ]; # $out contains all the config
 
diff --git a/pkgs/development/libraries/glibc/common.nix b/pkgs/development/libraries/glibc/common.nix
index 7128f560619..32c1b364737 100644
--- a/pkgs/development/libraries/glibc/common.nix
+++ b/pkgs/development/libraries/glibc/common.nix
@@ -10,8 +10,8 @@ cross:
 , preConfigure ? "", ... }@args:
 
 let
-  version = "2.25";
-  sha256 = "067bd9bb3390e79aa45911537d13c3721f1d9d3769931a30c2681bfee66f23a0";
+  version = "2.24";
+  sha256 = "1ghzp41ryvsqxn4rhrm8r25wc33m2jf8zrcc1pj3jxyk8ad9a0by";
 in
 
 assert cross != null -> gccCross != null;
@@ -138,7 +138,7 @@ stdenv.mkDerivation ({
     lib.optionalString (cross != null) "-${cross.config}";
 
   src = fetchurl {
-    url = "mirror://gnu/glibc/glibc-${version}.tar.xz";
+    url = "mirror://gnu/glibc/glibc-${version}.tar.gz";
     inherit sha256;
   };
 
diff --git a/pkgs/development/libraries/glibc/default.nix b/pkgs/development/libraries/glibc/default.nix
index a46f97e0e05..d6c496819da 100644
--- a/pkgs/development/libraries/glibc/default.nix
+++ b/pkgs/development/libraries/glibc/default.nix
@@ -81,7 +81,7 @@ in
       # to bootstrap-tools; on cross-arm this stripping would break objects.
       if [ -z "$crossConfig" ]; then
         for i in "$out"/lib/*.a; do
-            [ "$i" = "$out/lib/libm.a" ] || strip -S "$i"
+            strip -S "$i"
         done
       fi
 
diff --git a/pkgs/tools/misc/findutils/default.nix b/pkgs/tools/misc/findutils/default.nix
index 549175ed7b0..1271aa8c986 100644
--- a/pkgs/tools/misc/findutils/default.nix
+++ b/pkgs/tools/misc/findutils/default.nix
@@ -10,8 +10,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ coreutils ];
 
-  # Since glibc-2.25 the i686 tests hang reliably right after test-sleep.
-  doCheck = !stdenv.isDarwin && (stdenv.system != "i686-linux");
+  doCheck = !stdenv.isDarwin;
 
   outputs = [ "out" "info" ];