st.c | 2 +-

diff --git a/st.c b/st.c
index 3829e73836202e4d82699585c96a0fde0d5cd6c1..4d04416d1946b02bdb277585d030bb9c9c3f0991 100644
--- a/st.c
+++ b/st.c
@@ -630,7 +630,7 @@ 		buflen -= charsize;
 	}
 
 	/* keep any uncomplete utf8 char for the next call */
-	memcpy(buf, ptr, buflen);
+	memmove(buf, ptr, buflen);
 }
 
 void