diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index 4245579edb4e..cef01e4e8989 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -670,7 +670,7 @@ static int __init vdso_init(void)
 	/*
 	 * Fill up the "systemcfg" stuff for backward compatiblity
 	 */
-	strcpy(vdso_data->eye_catcher, "SYSTEMCFG:PPC64");
+	strcpy((char *)vdso_data->eye_catcher, "SYSTEMCFG:PPC64");
 	vdso_data->version.major = SYSTEMCFG_MAJOR;
 	vdso_data->version.minor = SYSTEMCFG_MINOR;
 	vdso_data->processor = mfspr(SPRN_PVR);