diff --git a/repos/libports/lib/mk/libcrypto.inc b/repos/libports/lib/mk/libcrypto.inc
index eb87feaa7..e325f7773 100644
--- a/repos/libports/lib/mk/libcrypto.inc
+++ b/repos/libports/lib/mk/libcrypto.inc
@@ -182,6 +182,12 @@ SRC_DIR = aes asn1 bf bio bn buffer camellia cast cmac cms comp conf des dh \
 
 SRC_C += $(foreach dir,$(SRC_DIR),$(addprefix $(dir)/,$(SRC_C_$(dir))))
 
+#
+# Suppress warning "right-hand operand of comma expression has no effect" for
+# the HOST_c2l(c,l) macro.
+#
+CC_OPT_md5/md5_dgst := -Wno-unused-value
+
 INC_DIR += $(LIBCRYPTO_DIR)/asn1
 INC_DIR += $(LIBCRYPTO_DIR)/evp
 INC_DIR += $(LIBCRYPTO_DIR)/modes