diff --git a/smc.h b/smc.h
index d6f1148..37301e7 100644
--- a/smc.h
+++ b/smc.h
@@ -40,7 +40,7 @@
 
 // key values
 #define SMC_KEY_CPU_TEMP "TCXC"
-#define SMC_KEY_GPU_TEMP "TG0P"
+#define SMC_KEY_GPU_TEMP "TCGC"
 #define SMC_KEY_FAN0_RPM_CUR "F0Ac"
 
 typedef struct {