diff --git a/9unit.c b/9unit.c
index bd2cd62..defe2aa 100644
--- a/9unit.c
+++ b/9unit.c
@@ -187,9 +187,9 @@ single_test_context(
 void check_value(
 	TestState *s,
 	const char *context,
+	void (*test)(TestState *, void *, void *),
 	void *chk_val,
-	void *ref_val,
-	void (*test)(TestState *, void *, void *)
+	void *ref_val
 )
 {
 	if (!(s && test)) return;
diff --git a/9unit.h b/9unit.h
index 11ceaf8..b69f54f 100644
--- a/9unit.h
+++ b/9unit.h
@@ -98,13 +98,16 @@ extern void single_test_context(
 extern void check_value(
 	TestState *, // the current test state
 	const char *, // a description of the context
-	void *, // the value being checked
-	void *, // the reference value
-	void (*)( // the test function
+
+	// the test function
+	void (*)(
 		TestState *,
 		void *, // the check value
 		void * // the reference value
-	)
+	),
+
+	void *, // the value being checked
+	void * // the reference value
 );
 
 //jl