diff --git a/pkgs/development/compilers/ghc/7.4.2.nix b/pkgs/development/compilers/ghc/7.4.2.nix
index 0bc2a855306..d1acb3d09b9 100644
--- a/pkgs/development/compilers/ghc/7.4.2.nix
+++ b/pkgs/development/compilers/ghc/7.4.2.nix
@@ -12,7 +12,6 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ ghc perl gmp ncurses ];
 
-  enableParallelBuilding = true;
 
   buildMK = ''
     libraries/integer-gmp_CONFIGURE_OPTS += --configure-option=--with-gmp-libraries="${gmp}/lib"
diff --git a/pkgs/development/compilers/ghc/7.6.1.nix b/pkgs/development/compilers/ghc/7.6.1.nix
index 99c93c7a980..5a63d30390d 100644
--- a/pkgs/development/compilers/ghc/7.6.1.nix
+++ b/pkgs/development/compilers/ghc/7.6.1.nix
@@ -12,17 +12,6 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ ghc perl gmp ncurses ];
 
-  # My attempts to compile GHC with parallel build support enabled, failed
-  # 4 consecutive times with the following error:
-  #
-  #    building rts/dist/build/AutoApply.debug_o
-  #    building rts/dist/build/AutoApply.thr_o
-  #      rts_dist_HC rts/dist/build/AutoApply.debug_o
-  #    /nix/store/1iigiim5855m8j7pmwf5xrnpf705s4dh-binutils-2.21.1a/bin/ld: cannot find libraries/integer-gmp/dist-install/build/cbits/gmp-wrappers_o_split/gmp-wrappers__1.o
-  #    collect2: ld returned 1 exit status
-  #    make[1]: *** [libraries/integer-gmp/dist-install/build/cbits/gmp-wrappers.p_o] Error 1
-  enableParallelBuilding = false;
-
   buildMK = ''
     libraries/integer-gmp_CONFIGURE_OPTS += --configure-option=--with-gmp-libraries="${gmp}/lib"
     libraries/integer-gmp_CONFIGURE_OPTS += --configure-option=--with-gmp-includes="${gmp}/include"
diff --git a/pkgs/development/compilers/ghc/7.6.2.nix b/pkgs/development/compilers/ghc/7.6.2.nix
index ac2810c62b2..45f877ffc7c 100644
--- a/pkgs/development/compilers/ghc/7.6.2.nix
+++ b/pkgs/development/compilers/ghc/7.6.2.nix
@@ -12,7 +12,6 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ ghc perl gmp ncurses ];
 
-  enableParallelBuilding = true;
 
   buildMK = ''
     libraries/integer-gmp_CONFIGURE_OPTS += --configure-option=--with-gmp-libraries="${gmp}/lib"
diff --git a/pkgs/development/compilers/ghc/7.6.3.nix b/pkgs/development/compilers/ghc/7.6.3.nix
index 9135741e9f0..c0933b2a961 100644
--- a/pkgs/development/compilers/ghc/7.6.3.nix
+++ b/pkgs/development/compilers/ghc/7.6.3.nix
@@ -12,7 +12,6 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ ghc perl gmp ncurses ];
 
-  enableParallelBuilding = false; # the same errors as 7.6.1
 
   buildMK = ''
     libraries/integer-gmp_CONFIGURE_OPTS += --configure-option=--with-gmp-libraries="${gmp}/lib"