diff --git a/src/libosmocc/message.c b/src/libosmocc/message.c
index 5b069dd..ab66a9f 100644
--- a/src/libosmocc/message.c
+++ b/src/libosmocc/message.c
@@ -33,7 +33,8 @@
 }
 
 #define _OSMO_CC_NAME2VALUE(array) { \
-	for (int value = 0; (size_t)value < (sizeof(array) / sizeof(array[0])); value++) { \
+	int value; \
+	for (value = 0; (size_t)value < (sizeof(array) / sizeof(array[0])); value++) { \
 		if (!strcasecmp(array[value], name)) \
 			return value; \
 	} \
diff --git a/src/libosmocc/session.c b/src/libosmocc/session.c
index 50a4a92..59fb2c7 100644
--- a/src/libosmocc/session.c
+++ b/src/libosmocc/session.c
@@ -29,7 +29,7 @@
 #include "../liboptions/options.h"
 #include "endpoint.h"
 
-#define NTP_OFFSET      2208988800
+#define NTP_OFFSET      2208988800U
 
 void osmo_cc_set_local_peer(osmo_cc_session_config_t *conf, enum osmo_cc_session_nettype nettype, enum osmo_cc_session_addrtype addrtype, const char *address)
 {