diff --git a/pkgs/development/libraries/boost/generic.nix b/pkgs/development/libraries/boost/generic.nix
index 21ab2e178cb..8ba8dc19009 100644
--- a/pkgs/development/libraries/boost/generic.nix
+++ b/pkgs/development/libraries/boost/generic.nix
@@ -111,7 +111,7 @@ let
         -exec sed '1i#line 1 "{}"' -i '{}' \;
     )
   '' + optionalString (stdenv.cross.libc or null == "msvcrt") ''
-    ${stdenv.cross.config}-ranlib "$lib"/lib/*.a
+    ${stdenv.cross.config}-ranlib "$lib/lib/"*.a
   '';
 
 in