diff --git a/board/ryu/board.h b/board/ryu/board.h
index 04bf5e4d94..9f14ef1d1d 100644
--- a/board/ryu/board.h
+++ b/board/ryu/board.h
@@ -36,6 +36,7 @@
 #undef CONFIG_CONSOLE_CMDHELP
 #define CONFIG_INDUCTIVE_CHARGING
 #undef CONFIG_HIBERNATE
+#define CONFIG_DEBUG_ASSERT_BRIEF
 
 /* Disable unused console command to save flash space */
 #undef CONFIG_CMD_POWERINDEBUG
diff --git a/common/panic_output.c b/common/panic_output.c
index f77277ab33..4f0f22d00d 100644
--- a/common/panic_output.c
+++ b/common/panic_output.c
@@ -78,6 +78,14 @@ void panic_reboot(void)
 }
 
 #ifdef CONFIG_DEBUG_ASSERT_REBOOTS
+#ifdef CONFIG_DEBUG_ASSERT_BRIEF
+void panic_assert_fail(const char *fname, int linenum)
+{
+	panic_printf("\nASSERTION FAILURE at %s:%d\n", fname, linenum);
+
+	panic_reboot();
+}
+#else
 void panic_assert_fail(const char *msg, const char *func, const char *fname,
 		       int linenum)
 {
@@ -87,6 +95,7 @@ void panic_assert_fail(const char *msg, const char *func, const char *fname,
 	panic_reboot();
 }
 #endif
+#endif
 
 void panic(const char *msg)
 {
diff --git a/include/config.h b/include/config.h
index cfd7a5f97d..b119823601 100644
--- a/include/config.h
+++ b/include/config.h
@@ -413,6 +413,15 @@
  */
 #define CONFIG_DEBUG_ASSERT_REBOOTS
 
+/*
+ * On assertion failure, prints only the file name and the line number.
+ *
+ * Ignored if CONFIG_DEBUG_ASSERT_REBOOTS is not defined.
+ *
+ * Boards may define this to reduce image size.
+ */
+#undef CONFIG_DEBUG_ASSERT_BRIEF
+
 /*
  * Disable the write buffer used for default memory map accesses.
  * This turns "Imprecise data bus errors" into "Precise" errors
diff --git a/include/panic.h b/include/panic.h
index 40bab2487e..74376554b6 100644
--- a/include/panic.h
+++ b/include/panic.h
@@ -101,8 +101,12 @@ void panic_data_print(const struct panic_data *pdata);
  * @param fname		File name where assertion happened
  * @param linenum	Line number where assertion happened
  */
+#ifdef CONFIG_DEBUG_ASSERT_BRIEF
+void panic_assert_fail(const char *fname, int linenum);
+#else
 void panic_assert_fail(const char *msg, const char *func, const char *fname,
 		       int linenum);
+#endif
 
 /**
  * Display a custom panic message and reset
diff --git a/include/util.h b/include/util.h
index 8b1e51e2c5..e83e2fe05e 100644
--- a/include/util.h
+++ b/include/util.h
@@ -18,11 +18,19 @@
  */
 #ifdef CONFIG_DEBUG_ASSERT
 #ifdef CONFIG_DEBUG_ASSERT_REBOOTS
+
+#ifdef CONFIG_DEBUG_ASSERT_BRIEF
+#define ASSERT(cond) do {			\
+		if (!(cond))			\
+			panic_assert_fail(__FILE__, __LINE__);	\
+	} while (0)
+#else
 #define ASSERT(cond) do {			\
 		if (!(cond))			\
 			panic_assert_fail(#cond, __func__, __FILE__, \
 				__LINE__);	\
 	} while (0)
+#endif
 #else
 #define ASSERT(cond) do {			\
 		if (!(cond))			\