diff --git a/pkgs/development/libraries/icu/base.nix b/pkgs/development/libraries/icu/base.nix
index 1379a9a373d..6d9a9725cc2 100644
--- a/pkgs/development/libraries/icu/base.nix
+++ b/pkgs/development/libraries/icu/base.nix
@@ -48,6 +48,9 @@ stdenv.mkDerivation {
   # remove dependency on bootstrap-tools in early stdenv build
   postInstall = stdenv.lib.optionalString stdenv.isDarwin ''
     sed -i 's/INSTALL_CMD=.*install/INSTALL_CMD=install/' $out/lib/icu/${version}/pkgdata.inc
+  '' + ''
+    substituteInPlace "$dev/bin/icu-config" \
+      --replace \''${pkglibdir}/Makefile.inc "$dev/lib/icu/Makefile.inc"
   '';
 
   postFixup = ''moveToOutput lib/icu "$dev" '';