diff --git a/cores/esp8266/pgmspace.h b/cores/esp8266/pgmspace.h
index 11c9533cd..0188bc9e5 100644
--- a/cores/esp8266/pgmspace.h
+++ b/cores/esp8266/pgmspace.h
@@ -7,6 +7,9 @@
 #define PGM_P  		const char *
 #define PSTR(str) 	(str)
 
+#define vsnprintf_P(...) 	vsnprintf( __VA_ARGS__ )
+#define snprintf_P(...) 	snprintf( __VA_ARGS__ )
+
 #define _SFR_BYTE(n) (n)
 
 typedef void 			prog_void;