diff --git a/include/fsl_esdhc.h b/include/fsl_esdhc.h
index 89b8304d5f7b7b24184b9812abf4f034579dcf8a..eac6a2bd4843821204e006bd393e3f0a46a4d128 100644
--- a/include/fsl_esdhc.h
+++ b/include/fsl_esdhc.h
@@ -32,7 +32,7 @@
 #define SYSCTL			0x0002e02c
 #define SYSCTL_INITA		0x08000000
 #define SYSCTL_TIMEOUT_MASK	0x000f0000
-#define SYSCTL_CLOCK_MASK	0x00000fff
+#define SYSCTL_CLOCK_MASK	0x0000fff0
 #define SYSCTL_PEREN		0x00000004
 #define SYSCTL_HCKEN		0x00000002
 #define SYSCTL_IPGEN		0x00000001