diff --git a/pkgs/desktops/plasma-5.5/libksysguard/default.nix b/pkgs/desktops/plasma-5.5/libksysguard/default.nix
index 373221b2b305..402b3ce3beee 100644
--- a/pkgs/desktops/plasma-5.5/libksysguard/default.nix
+++ b/pkgs/desktops/plasma-5.5/libksysguard/default.nix
@@ -1,4 +1,4 @@
-{ plasmaPackage, extra-cmake-modules, kauth, kcompletion
+{ fetchpatch, plasmaPackage, extra-cmake-modules, kauth, kcompletion
 , kconfigwidgets, kcoreaddons, kservice, kwidgetsaddons
 , kwindowsystem, plasma-framework, qtscript, qtwebkit, qtx11extras
 , kconfig, ki18n, kiconthemes
@@ -6,7 +6,14 @@
 
 plasmaPackage {
   name = "libksysguard";
-  patches = [ ./0001-qdiriterator-follow-symlinks.patch ];
+  patches = [
+    ./0001-qdiriterator-follow-symlinks.patch
+    (fetchpatch { # should be included on update
+      name = "glibc-2.23-isnan.patch";
+      url = https://github.com/KDE/libksysguard/commit/b0578798eb3.patch;
+      sha256 = "1my5nqp58c5azyi265j261a10wh047zxakprrnpl85mlg7bwskdh";
+    })
+  ];
   nativeBuildInputs = [
     extra-cmake-modules
   ];