diff --git a/haskell/haskell.bzl b/haskell/haskell.bzl
index a38360e028..91d978c014 100644
--- a/haskell/haskell.bzl
+++ b/haskell/haskell.bzl
@@ -60,6 +60,7 @@ _haskell_common_attrs = {
   ),
   "data": attr.label_list(
     doc = "See [Bazel documentation](https://docs.bazel.build/versions/master/be/common-definitions.html#common.data).",
+    allow_files = True,
     cfg = "data",
   ),
   "compiler_flags": attr.string_list(
diff --git a/tests/binary-with-data/BUILD b/tests/binary-with-data/BUILD
index 19a9b63e0f..eba17cdc95 100644
--- a/tests/binary-with-data/BUILD
+++ b/tests/binary-with-data/BUILD
@@ -10,6 +10,8 @@ haskell_binary(
   main_file = "bin1.hs",
   prebuilt_dependencies = ["base"],
   visibility = ["//visibility:public"],
+  # Regular file input:
+  data = ["bin1-input"],
 )
 
 haskell_binary(
diff --git a/tests/binary-with-data/bin1-input b/tests/binary-with-data/bin1-input
new file mode 100644
index 0000000000..12f00e90b6
--- /dev/null
+++ b/tests/binary-with-data/bin1-input
@@ -0,0 +1 @@
+contents
diff --git a/tests/binary-with-data/bin1.hs b/tests/binary-with-data/bin1.hs
index de106fe48f..309f6ecd56 100644
--- a/tests/binary-with-data/bin1.hs
+++ b/tests/binary-with-data/bin1.hs
@@ -1,3 +1,9 @@
 module Main where
 
-main = return ()
+import Control.Monad (unless)
+
+main :: IO ()
+main = do
+    contents <- readFile "tests/binary-with-data/bin1-input"
+    unless (contents == "contents\n")
+      $ error $ "Incorrect input; got " ++ show contents
diff --git a/tests/binary-with-data/bin3.cc b/tests/binary-with-data/bin3.cc
new file mode 100644
index 0000000000..4cce7f667f
--- /dev/null
+++ b/tests/binary-with-data/bin3.cc
@@ -0,0 +1,3 @@
+int main() {
+  return 0;
+}