diff --git a/src/subnet_parse.c b/src/subnet_parse.c
index c919b59a..ccfecbfa 100644
--- a/src/subnet_parse.c
+++ b/src/subnet_parse.c
@@ -311,7 +311,7 @@ bool net2str(char *netstr, int len, const subnet_t *subnet) {
 		return false;
 	}
 
-	int result;
+	int result = -1;
 	int prefixlength = -1;
 	switch (subnet->type) {
 		case SUBNET_MAC: