diff --git a/pkgs/applications/science/electronics/qucs-s/default.nix b/pkgs/applications/science/electronics/qucs-s/default.nix
index 6507198a790..9c692865f6e 100644
--- a/pkgs/applications/science/electronics/qucs-s/default.nix
+++ b/pkgs/applications/science/electronics/qucs-s/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   preConfigure = ''
     # Make custom kernels avaible from qucs-s
-    gappsWrapperArgs+=(--prefix PATH ":" ${lib.makeBinPath kernels})
+    gappsWrapperArgs+=(--prefix PATH ":" ${lib.escapeShellArg (lib.makeBinPath kernels)})
   '';
 
   QTDIR=qt4;