diff --git a/configs/skylake b/configs/skylake
index 4577c84..12ca514 100644
--- a/configs/skylake
+++ b/configs/skylake
@@ -2,4 +2,4 @@
 CONFIG_GFX_GMA_CPU_VARIANT	= Normal
 CONFIG_GFX_GMA_INTERNAL_PORT	= DP
 CONFIG_GFX_GMA_ANALOG_I2C_PORT	= PCH_DAC
-CONFIG_GFX_GMA_DEFAULT_MMIO	= 16#e000_0000#
+CONFIG_GFX_GMA_DEFAULT_MMIO	= 16\#e000_0000\#