diff --git a/meta/recipes-devtools/syslinux/syslinux_6.04-pre2.bb b/meta/recipes-devtools/syslinux/syslinux_6.04-pre2.bb
index 0e4a23c1b4..4b4b6d4b64 100644
--- a/meta/recipes-devtools/syslinux/syslinux_6.04-pre2.bb
+++ b/meta/recipes-devtools/syslinux/syslinux_6.04-pre2.bb
@@ -48,7 +48,7 @@ TARGET_LDFLAGS = ""
 SECURITY_LDFLAGS = ""
 LDFLAGS_SECTION_REMOVAL = ""
 
-CFLAGS:append = " -DNO_INLINE_FUNCS"
+CFLAGS:append = " -DNO_INLINE_FUNCS -Wno-error=implicit-function-declaration"
 
 EXTRA_OEMAKE = " \
 	BINDIR=${bindir} SBINDIR=${sbindir} LIBDIR=${libdir} \