diff --git a/payloads/libpayload/Makefile b/payloads/libpayload/Makefile
index f2f87abc53..8d28c2dcca 100644
--- a/payloads/libpayload/Makefile
+++ b/payloads/libpayload/Makefile
@@ -61,7 +61,7 @@ include $(PLATFORM-y) $(BUILD-y)
 
 INCLUDES := -I./include
 INCLUDES += -I$(shell $(CC) -print-search-dirs | head -n 1 | cut -d' ' -f2)include
-CFLAGS := -Werror -fno-stack-protector -nostdinc $(INCLUDES)
+CFLAGS := -Werror -Os -fno-stack-protector -nostdinc $(INCLUDES)
 
 libpayload.a: $(TARGETS-y)
 	$(AR) rc $@ $(TARGETS-y)
diff --git a/payloads/libpayload/libc/string.c b/payloads/libpayload/libc/string.c
index c9f0603387..f71d1c3af6 100644
--- a/payloads/libpayload/libc/string.c
+++ b/payloads/libpayload/libc/string.c
@@ -142,6 +142,11 @@ char *strncpy(char *d, const char *s, int n)
 	return d;
 }
 
+char *strcpy(char *d, const char *s)
+{
+	return strncpy(d, s, strlen(s));
+}
+
 char *strncat(char *d, const char *s, int n)
 {
 	char *p = d + strlen(d);