diff --git a/modules/aaa_diameter/dm_impl.c b/modules/aaa_diameter/dm_impl.c
index b4de5fd21a..23c9ac8de5 100644
--- a/modules/aaa_diameter/dm_impl.c
+++ b/modules/aaa_diameter/dm_impl.c
@@ -20,6 +20,7 @@
 
 #include <freeDiameter/extension.h>
 #include <sys/eventfd.h>
+#include <inttypes.h>
 
 #include "../../ut.h"
 #include "../../lib/list.h"
@@ -481,7 +482,7 @@ static int dm_avps2json(void *root, cJSON *avps)
 			break;
 
 		case AVP_TYPE_INTEGER64:
-			LM_DBG("%2d. got int64   AVP %s (%u), value: %ld\n", i, dm_avp.avp_name, h->avp_code, h->avp_value->i64);
+			LM_DBG("%2d. got int64   AVP %s (%u), value: %" PRId64 "\n", i, dm_avp.avp_name, h->avp_code, h->avp_value->i64);
 			num_val = (double)h->avp_value->i64;
 			break;
 
@@ -491,7 +492,7 @@ static int dm_avps2json(void *root, cJSON *avps)
 			break;
 
 		case AVP_TYPE_UNSIGNED64:
-			LM_DBG("%2d. got uint64  AVP %s (%u), value: %lu\n", i, dm_avp.avp_name, h->avp_code, h->avp_value->u64);
+			LM_DBG("%2d. got uint64  AVP %s (%u), value: %" PRIu64 "\n", i, dm_avp.avp_name, h->avp_code, h->avp_value->u64);
 			num_val = (double)h->avp_value->u64;
 			break;
 
diff --git a/modules/http2d/server.c b/modules/http2d/server.c
index 0154e1e851..8707286283 100644
--- a/modules/http2d/server.c
+++ b/modules/http2d/server.c
@@ -635,7 +635,7 @@ static int on_frame_recv_callback(nghttp2_session *session,
 	switch (frame->hd.type) {
 	case NGHTTP2_DATA:
 	case NGHTTP2_HEADERS:
-		LM_DBG("h2 header [%d], %p %ld\n", frame->hd.type, frame->headers.nva, frame->headers.nvlen);
+		LM_DBG("h2 header [%d], %p %zu\n", frame->hd.type, frame->headers.nva, frame->headers.nvlen);
 		/* Check that the client request has finished */
 		if (frame->hd.flags & NGHTTP2_FLAG_END_STREAM) {
 			stream_data =