diff --git a/BUILD.bazel b/BUILD.bazel
index e69de29b..f3982a2b 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -0,0 +1 @@
+exports_files(["qac_compile_commands.sh"])
diff --git a/qac_compile_commands.bzl b/qac_compile_commands.bzl
new file mode 100644
index 00000000..3c2b8977
--- /dev/null
+++ b/qac_compile_commands.bzl
@@ -0,0 +1,19 @@
+def qac_compile_commands(name, tool, **kwargs):
+    """Replaces -isystem with -I in a compile_commands.json file.
+
+    This is necessary to get Helix QAC to work correctly.
+
+    Args:
+        name: A unique label for this rule.
+        tool: A label refrencing a @hedron_compile_commands:refresh_compile_commands target.
+
+    """
+    arg = "$(location {})".format(tool)
+    native.sh_binary(
+        name = name,
+        # FIXME: Assumes //bazel is a valid label in the consuming workspace.
+        srcs = ["//bazel:qac_compile_commands.sh"],
+        args = [arg],
+        data = [tool],
+        **kwargs
+    )
diff --git a/qac_compile_commands.sh b/qac_compile_commands.sh
new file mode 100755
index 00000000..fc54110d
--- /dev/null
+++ b/qac_compile_commands.sh
@@ -0,0 +1,9 @@
+#! /bin/bash
+# This script turns the -isystem flag into the -I flag.
+# This is needed for Helix QAC to work properly.
+# Usage: qac_compile_commands <REFRESH_COMPILE_COMMANDS>
+
+REFRESH_COMPILE_COMMANDS=$1
+
+$REFRESH_COMPILE_COMMANDS
+sed -i 's/-isystem/-I/' $BUILD_WORKSPACE_DIRECTORY/compile_commands.json