diff --git a/os/hal/ports/STM32/STM32F4xx/hal_lld.h b/os/hal/ports/STM32/STM32F4xx/hal_lld.h
index 58f4fc35b..e1802aaed 100644
--- a/os/hal/ports/STM32/STM32F4xx/hal_lld.h
+++ b/os/hal/ports/STM32/STM32F4xx/hal_lld.h
@@ -781,7 +781,7 @@
 #define STM32_1WS_THRESHOLD         36000000
 #define STM32_2WS_THRESHOLD         54000000
 #define STM32_3WS_THRESHOLD         72000000
-#define STM32_4WS_THRESHOLD         840000000
+#define STM32_4WS_THRESHOLD         84000000
 #define STM32_5WS_THRESHOLD         0
 #define STM32_6WS_THRESHOLD         0
 #define STM32_7WS_THRESHOLD         0
@@ -791,8 +791,8 @@
 #define STM32_1WS_THRESHOLD         32000000
 #define STM32_2WS_THRESHOLD         48000000
 #define STM32_3WS_THRESHOLD         64000000
-#define STM32_4WS_THRESHOLD         800000000
-#define STM32_5WS_THRESHOLD         840000000
+#define STM32_4WS_THRESHOLD         80000000
+#define STM32_5WS_THRESHOLD         84000000
 #define STM32_6WS_THRESHOLD         0
 #define STM32_7WS_THRESHOLD         0
 #define STM32_8WS_THRESHOLD         0