diff --git a/kernel/chips/lm87.c b/kernel/chips/lm87.c
index b35f8d61..90254a8a 100644
--- a/kernel/chips/lm87.c
+++ b/kernel/chips/lm87.c
@@ -215,11 +215,11 @@ extern inline u8 FAN_TO_REG(long rpm, int div)
 #define LM87_INIT_IN_MAX_5 \
         (LM87_INIT_IN_5 + ((LM87_INIT_IN_5 * LM87_INIT_IN_PERCENTAGE) / 100))
 
-#define LM87_INIT_FAN_MIN 3000
+#define LM87_INIT_FAN_MIN 4000
 
-#define LM87_INIT_EXT_TEMP_MAX 600
+#define LM87_INIT_EXT_TEMP_MAX 800
 #define LM87_INIT_EXT_TEMP_MIN 50
-#define LM87_INIT_INT_TEMP_MAX 600
+#define LM87_INIT_INT_TEMP_MAX 700
 #define LM87_INIT_INT_TEMP_MIN 50
 
 #ifdef MODULE