diff --git a/include/types/listener.h b/include/types/listener.h
index 1098b42..bcc57ae 100644
--- a/include/types/listener.h
+++ b/include/types/listener.h
@@ -124,9 +124,9 @@
 	char *alpn_str;            /* ALPN protocol string */
 	int alpn_len;              /* ALPN protocol string length */
 #endif
-	int verify:3;              /* verify method (set of SSL_VERIFY_* flags) */
-	int no_ca_names:1;         /* do not send ca names to clients (ca_file related) */
-	int early_data:1;          /* early data allowed */
+	unsigned int verify:3;     /* verify method (set of SSL_VERIFY_* flags) */
+	unsigned int no_ca_names:1;/* do not send ca names to clients (ca_file related) */
+	unsigned int early_data:1; /* early data allowed */
 	char *ca_file;             /* CAfile to use on verify */
 	char *crl_file;            /* CRLfile to use on verify */
 	char *ciphers;             /* cipher suite to use if non-null */
diff --git a/include/types/pattern.h b/include/types/pattern.h
index a0bb08e..a2d609b 100644
--- a/include/types/pattern.h
+++ b/include/types/pattern.h
@@ -150,8 +150,8 @@
 		int i;                          /* integer value */
 		struct {
 			signed long long min, max;
-			int min_set :1;
-			int max_set :1;
+			unsigned int min_set:1;
+			unsigned int max_set:1;
 		} range; /* integer range */
 		struct {
 			struct in_addr addr;
diff --git a/include/types/ssl_sock.h b/include/types/ssl_sock.h
index ccc9235..009c6c6 100644
--- a/include/types/ssl_sock.h
+++ b/include/types/ssl_sock.h
@@ -36,8 +36,8 @@
 struct sni_ctx {
 	SSL_CTX *ctx;             /* context associated to the certificate */
 	int order;                /* load order for the certificate */
-	uint8_t neg:1;              /* reject if match */
-	uint8_t wild:1;            /* wildcard sni */
+	unsigned int neg:1;       /* reject if match */
+	unsigned int wild:1;      /* wildcard sni */
 	struct pkey_info kinfo;   /* pkey info */
 	struct ssl_bind_conf *conf; /* ssl "bind" conf for the certificate */
 	struct list by_ckch_inst; /* chained in ckch_inst's list of sni_ctx */
@@ -109,8 +109,8 @@
  */
 struct ckch_store {
 	struct cert_key_and_chain *ckch;
-	int multi:1; /* is it a multi-cert bundle ? */
-	int filters:1; /* one of the instances is using filters, TODO:remove this flag once filters are supported */
+	unsigned int multi:1;  /* is it a multi-cert bundle ? */
+	unsigned int filters:1;/* one of the instances is using filters, TODO:remove this flag once filters are supported */
 	struct list ckch_inst; /* list of ckch_inst which uses this ckch_node */
 	struct ebmb_node node;
 	char path[0];