diff --git a/pkgs/development/interpreters/guile/default.nix b/pkgs/development/interpreters/guile/default.nix
index fa8bd29bd684..6b4e6c2a7288 100644
--- a/pkgs/development/interpreters/guile/default.nix
+++ b/pkgs/development/interpreters/guile/default.nix
@@ -72,9 +72,11 @@
     # why `--with-libunistring-prefix' and similar options coming from
     # `AC_LIB_LINKFLAGS_BODY' don't work on NixOS/x86_64.
     sed -i "$out/lib/pkgconfig/guile-2.0.pc"    \
-        -e 's|-lunistring|-L${libunistring}/lib -lunistring|g ;
+        -e "s|-lunistring|-L${libunistring}/lib -lunistring|g ;
             s|^Cflags:\(.*\)$|Cflags: -I${libunistring}/include \1|g ;
-            s|-lltdl|-L${libtool.lib}/lib -lltdl|g'
+            s|-lltdl|-L${libtool.lib}/lib -lltdl|g ;
+            s|includedir=$out|includedir=$dev|g
+            "
   '';
 
   # make check doesn't work on darwin