diff --git a/tests/Makefile.am b/tests/Makefile.am
index 8b5aa4bd9..70352dbb5 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -36,7 +36,6 @@ EXTRA_DIST = $(TESTS) \
   timeout.nix timeout.builder.sh \
   secure-drv-outputs.nix \
   multiple-outputs.nix \
-  multiple-outputs.a.builder.sh multiple-outputs.b.builder.sh \
   $(wildcard lang/*.nix) $(wildcard lang/*.exp) $(wildcard lang/*.exp.xml) $(wildcard lang/*.flags) $(wildcard lang/dir*/*.nix) \
   common.sh.in
 
diff --git a/tests/multiple-outputs.a.builder.sh b/tests/multiple-outputs.a.builder.sh
deleted file mode 100644
index 657b7ea0a..000000000
--- a/tests/multiple-outputs.a.builder.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-mkdir $first
-mkdir $second
-test -z $all
-
-echo "second" > $first/file
-echo "first" > $second/file
diff --git a/tests/multiple-outputs.b.builder.sh b/tests/multiple-outputs.b.builder.sh
deleted file mode 100644
index acf939062..000000000
--- a/tests/multiple-outputs.b.builder.sh
+++ /dev/null
@@ -1,7 +0,0 @@
-mkdir $out
-test "$firstOutput $secondOutput" = "$allOutputs"
-test "$defaultOutput" = "$firstOutput"
-test "$(cat $firstOutput/file)" = "second"
-test "$(cat $secondOutput/file)" = "first"
-
-echo "success" > $out/file
diff --git a/tests/multiple-outputs.nix b/tests/multiple-outputs.nix
index e8fbf91bf..a4cf0caea 100644
--- a/tests/multiple-outputs.nix
+++ b/tests/multiple-outputs.nix
@@ -1,23 +1,35 @@
 with import ./config.nix;
 
-let
+rec {
 
   a = mkDerivation {
     name = "multiple-outputs-a";
     outputs = [ "first" "second" ];
-    builder = ./multiple-outputs.a.builder.sh;
+    builder = builtins.toFile "builder.sh"
+      ''
+        mkdir $first $second
+        test -z $all
+        echo "second" > $first/file
+        echo "first" > $second/file
+      '';
     helloString = "Hello, world!";
   };
 
-in
+  b = mkDerivation {
+    defaultOutput = assert a.second.helloString == "Hello, world!"; a;
+    firstOutput = a.first.first;
+    secondOutput = a.second.first.first.second.second.first.second;
+    allOutputs = a.all;
+    name = "multiple-outputs-b";
+    builder = builtins.toFile "builder.sh"
+      ''
+        mkdir $out
+        test "$firstOutput $secondOutput" = "$allOutputs"
+        test "$defaultOutput" = "$firstOutput"
+        test "$(cat $firstOutput/file)" = "second"
+        test "$(cat $secondOutput/file)" = "first"
+        echo "success" > $out/file
+      '';
+  };
 
-assert a.second.helloString == "Hello, world!";
-
-mkDerivation {
-  defaultOutput = a;
-  firstOutput = a.first.first;
-  secondOutput = a.second.first.first.second.second.first.second;
-  allOutputs = a.all;
-  name = "multiple-outputs-b";
-  builder = ./multiple-outputs.b.builder.sh;
 }
diff --git a/tests/multiple-outputs.sh b/tests/multiple-outputs.sh
index d3ebdbea3..dadd2e25f 100644
--- a/tests/multiple-outputs.sh
+++ b/tests/multiple-outputs.sh
@@ -2,14 +2,6 @@ source common.sh
 
 echo "Testing multiple outputs..."
 
-drvPath=$(nix-instantiate multiple-outputs.nix)
-
-echo "derivation is $drvPath"
-
-outPath=$(nix-store -rvv "$drvPath")
-
+outPath=$(nix-build multiple-outputs.nix -A b)
 echo "output path is $outPath"
-
-text=$(cat "$outPath"/file)
-if test "$text" != "success"; then exit 1; fi
-
+[ "$(cat "$outPath"/file)" = "success" ]