diff --git a/pkgs/applications/editors/emacs-25/default.nix b/pkgs/applications/editors/emacs-25/default.nix
index f798843639cb..e2d5e78c94a7 100644
--- a/pkgs/applications/editors/emacs-25/default.nix
+++ b/pkgs/applications/editors/emacs-25/default.nix
@@ -62,7 +62,7 @@ stdenv.mkDerivation rec {
              "--with-gif=no" "--with-tiff=no" ];
 
   NIX_CFLAGS_COMPILE = stdenv.lib.optionalString (stdenv.isDarwin && withX)
-    "-I${cairo}/include/cairo";
+    "-I${cairo.dev}/include/cairo";
 
   preBuild = ''
     find . -name '*.elc' -delete
diff --git a/pkgs/applications/networking/instant-messengers/telegram/tdesktop/default.nix b/pkgs/applications/networking/instant-messengers/telegram/tdesktop/default.nix
index c88c9a77bf1e..721dbcac6fb1 100644
--- a/pkgs/applications/networking/instant-messengers/telegram/tdesktop/default.nix
+++ b/pkgs/applications/networking/instant-messengers/telegram/tdesktop/default.nix
@@ -49,7 +49,7 @@ in stdenv.mkDerivation rec {
     "INCLUDEPATH+=${gtk2}/include/gtk-2.0"
     "INCLUDEPATH+=${glib}/include/glib-2.0"
     "INCLUDEPATH+=${glib.out}/lib/glib-2.0/include"
-    "INCLUDEPATH+=${cairo}/include/cairo"
+    "INCLUDEPATH+=${cairo.dev}/include/cairo"
     "INCLUDEPATH+=${pango}/include/pango-1.0"
     "INCLUDEPATH+=${gtk2.out}/lib/gtk-2.0/include"
     "INCLUDEPATH+=${gdk_pixbuf}/include/gdk-pixbuf-2.0"