diff --git a/lib/libc/riscv/string/Makefile.inc b/lib/libc/riscv/string/Makefile.inc
index ce965833cb2..bf62258c4db 100644
--- a/lib/libc/riscv/string/Makefile.inc
+++ b/lib/libc/riscv/string/Makefile.inc
@@ -5,5 +5,4 @@ MDSRCS+= \
 	memcpy.S \
 	memset.S \
 	strlen.S \
-	strchrnul.S \
-	strrchr.S
+	strchrnul.S