diff --git a/lib/isc/win32/libisc.def.in b/lib/isc/win32/libisc.def.in
index 73721366ae..c6b835f2c8 100644
--- a/lib/isc/win32/libisc.def.in
+++ b/lib/isc/win32/libisc.def.in
@@ -757,6 +757,8 @@ pkcs_C_VerifyFinal
 pkcs_C_VerifyInit
 pkcs_C_VerifyUpdate
 @END PKCS11
+strlcat
+strlcpy
 syslog
 
 @IF NOLONGER