diff --git a/include/kunit/assert.h b/include/kunit/assert.h
index 4b52e12c2ae8..aab5b1147df9 100644
--- a/include/kunit/assert.h
+++ b/include/kunit/assert.h
@@ -42,16 +42,15 @@ struct kunit_loc {
 
 /**
  * struct kunit_assert - Data for printing a failed assertion or expectation.
- * @format: a function which formats the data in this kunit_assert to a string.
  *
  * Represents a failed expectation/assertion. Contains all the data necessary to
  * format a string to a user reporting the failure.
  */
-struct kunit_assert {
-	void (*format)(const struct kunit_assert *assert,
-		       const struct va_format *message,
-		       struct string_stream *stream);
-};
+struct kunit_assert {};
+
+typedef void (*assert_format_t)(const struct kunit_assert *assert,
+			        const struct va_format *message,
+				struct string_stream *stream);
 
 void kunit_assert_prologue(const struct kunit_loc *loc,
 			   enum kunit_assert_type type,
@@ -71,16 +70,6 @@ void kunit_fail_assert_format(const struct kunit_assert *assert,
 			      const struct va_format *message,
 			      struct string_stream *stream);
 
-/**
- * KUNIT_INIT_FAIL_ASSERT_STRUCT - Initializer for &struct kunit_fail_assert.
- *
- * Initializes a &struct kunit_fail_assert. Intended to be used in
- * KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
- */
-#define KUNIT_INIT_FAIL_ASSERT_STRUCT {					\
-	.assert = { .format = kunit_fail_assert_format },		\
-}
-
 /**
  * struct kunit_unary_assert - Represents a KUNIT_{EXPECT|ASSERT}_{TRUE|FALSE}
  * @assert: The parent of this type.
@@ -110,7 +99,6 @@ void kunit_unary_assert_format(const struct kunit_assert *assert,
  * KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
  */
 #define KUNIT_INIT_UNARY_ASSERT_STRUCT(cond, expect_true) {		       \
-	.assert = { .format = kunit_unary_assert_format },		       \
 	.condition = cond,						       \
 	.expected_true = expect_true					       \
 }
@@ -145,7 +133,6 @@ void kunit_ptr_not_err_assert_format(const struct kunit_assert *assert,
  * KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
  */
 #define KUNIT_INIT_PTR_NOT_ERR_STRUCT(txt, val) {			       \
-	.assert = { .format = kunit_ptr_not_err_assert_format },	       \
 	.text = txt,							       \
 	.value = val							       \
 }
@@ -190,7 +177,6 @@ void kunit_binary_assert_format(const struct kunit_assert *assert,
  * KUNIT_INIT_BINARY_ASSERT_STRUCT() - Initializes a binary assert like
  *	kunit_binary_assert, kunit_binary_ptr_assert, etc.
  *
- * @format_func: a function which formats the assert to a string.
  * @text_: Pointer to a kunit_binary_assert_text.
  * @left_val: The actual evaluated value of the expression in the left slot.
  * @right_val: The actual evaluated value of the expression in the right slot.
@@ -200,11 +186,9 @@ void kunit_binary_assert_format(const struct kunit_assert *assert,
  * fields but with different types for left_val/right_val.
  * This is ultimately used by binary assertion macros like KUNIT_EXPECT_EQ, etc.
  */
-#define KUNIT_INIT_BINARY_ASSERT_STRUCT(format_func,			       \
-					text_,				       \
+#define KUNIT_INIT_BINARY_ASSERT_STRUCT(text_,				       \
 					left_val,			       \
 					right_val) {			       \
-	.assert = { .format = format_func },				       \
 	.text = text_,							       \
 	.left_value = left_val,						       \
 	.right_value = right_val					       \
diff --git a/include/kunit/test.h b/include/kunit/test.h
index 8ffcd7de9607..6730734a2216 100644
--- a/include/kunit/test.h
+++ b/include/kunit/test.h
@@ -509,9 +509,10 @@ void kunit_do_failed_assertion(struct kunit *test,
 			       const struct kunit_loc *loc,
 			       enum kunit_assert_type type,
 			       const struct kunit_assert *assert,
+			       assert_format_t assert_format,
 			       const char *fmt, ...);
 
-#define KUNIT_ASSERTION(test, assert_type, pass, assert_class, INITIALIZER, fmt, ...) do { \
+#define KUNIT_ASSERTION(test, assert_type, pass, assert_class, assert_format, INITIALIZER, fmt, ...) do { \
 	if (unlikely(!(pass))) {					       \
 		static const struct kunit_loc __loc = KUNIT_CURRENT_LOC;       \
 		struct assert_class __assertion = INITIALIZER;		       \
@@ -519,6 +520,7 @@ void kunit_do_failed_assertion(struct kunit *test,
 					  &__loc,			       \
 					  assert_type,			       \
 					  &__assertion.assert,		       \
+					  assert_format,		       \
 					  fmt,				       \
 					  ##__VA_ARGS__);		       \
 	}								       \
@@ -530,7 +532,8 @@ void kunit_do_failed_assertion(struct kunit *test,
 			assert_type,					       \
 			false,						       \
 			kunit_fail_assert,				       \
-			KUNIT_INIT_FAIL_ASSERT_STRUCT,			       \
+			kunit_fail_assert_format,			       \
+			{},						       \
 			fmt,						       \
 			##__VA_ARGS__)
 
@@ -561,6 +564,7 @@ void kunit_do_failed_assertion(struct kunit *test,
 			assert_type,					       \
 			!!(condition) == !!expected_true,		       \
 			kunit_unary_assert,				       \
+			kunit_unary_assert_format,			       \
 			KUNIT_INIT_UNARY_ASSERT_STRUCT(#condition,	       \
 						       expected_true),	       \
 			fmt,						       \
@@ -618,8 +622,8 @@ do {									       \
 			assert_type,					       \
 			__left op __right,				       \
 			assert_class,					       \
-			KUNIT_INIT_BINARY_ASSERT_STRUCT(format_func,	       \
-							&__text,	       \
+			format_func,					       \
+			KUNIT_INIT_BINARY_ASSERT_STRUCT(&__text,	       \
 							__left,		       \
 							__right),	       \
 			fmt,						       \
@@ -676,8 +680,8 @@ do {									       \
 			assert_type,					       \
 			strcmp(__left, __right) op 0,			       \
 			kunit_binary_str_assert,			       \
-			KUNIT_INIT_BINARY_ASSERT_STRUCT(kunit_binary_str_assert_format,\
-							&__text,	       \
+			kunit_binary_str_assert_format,			       \
+			KUNIT_INIT_BINARY_ASSERT_STRUCT(&__text,	       \
 							__left,		       \
 							__right),	       \
 			fmt,						       \
@@ -696,6 +700,7 @@ do {									       \
 			assert_type,					       \
 			!IS_ERR_OR_NULL(__ptr),				       \
 			kunit_ptr_not_err_assert,			       \
+			kunit_ptr_not_err_assert_format,		       \
 			KUNIT_INIT_PTR_NOT_ERR_STRUCT(#ptr,		       \
 						      __ptr),		       \
 			fmt,						       \
diff --git a/lib/kunit/test.c b/lib/kunit/test.c
index a5053a07409f..3845765e3a80 100644
--- a/lib/kunit/test.c
+++ b/lib/kunit/test.c
@@ -245,7 +245,7 @@ static void kunit_print_string_stream(struct kunit *test,
 
 static void kunit_fail(struct kunit *test, const struct kunit_loc *loc,
 		       enum kunit_assert_type type, const struct kunit_assert *assert,
-		       const struct va_format *message)
+		       assert_format_t assert_format, const struct va_format *message)
 {
 	struct string_stream *stream;
 
@@ -261,7 +261,7 @@ static void kunit_fail(struct kunit *test, const struct kunit_loc *loc,
 	}
 
 	kunit_assert_prologue(loc, type, stream);
-	assert->format(assert, message, stream);
+	assert_format(assert, message, stream);
 
 	kunit_print_string_stream(test, stream);
 
@@ -285,6 +285,7 @@ void kunit_do_failed_assertion(struct kunit *test,
 			       const struct kunit_loc *loc,
 			       enum kunit_assert_type type,
 			       const struct kunit_assert *assert,
+			       assert_format_t assert_format,
 			       const char *fmt, ...)
 {
 	va_list args;
@@ -294,7 +295,7 @@ void kunit_do_failed_assertion(struct kunit *test,
 	message.fmt = fmt;
 	message.va = &args;
 
-	kunit_fail(test, loc, type, assert, &message);
+	kunit_fail(test, loc, type, assert, assert_format, &message);
 
 	va_end(args);
 
