diff --git a/pkgs/development/compilers/gcc/6/default.nix b/pkgs/development/compilers/gcc/6/default.nix
index ec6f0ca8d14c..546b1377b53a 100644
--- a/pkgs/development/compilers/gcc/6/default.nix
+++ b/pkgs/development/compilers/gcc/6/default.nix
@@ -333,7 +333,7 @@ stdenv.mkDerivation ({
       else ""}
     ${if javaAwtGtk then "--enable-java-awt=gtk" else ""}
     ${if langJava && javaAntlr != null then "--with-antlr-jar=${javaAntlr}" else ""}
-    --with-gmp=${gmp}
+    --with-gmp=${gmp.dev}
     --with-mpfr=${mpfr}
     --with-mpc=${libmpc}
     ${if libelf != null then "--with-libelf=${libelf}" else ""}