diff --git a/openbsc/src/libctrl/control_if.c b/openbsc/src/libctrl/control_if.c
index d081342..cc5709d 100644
--- a/openbsc/src/libctrl/control_if.c
+++ b/openbsc/src/libctrl/control_if.c
@@ -518,7 +518,7 @@
 
 	talloc_free(dup);
 
-	cmd->reply = talloc_asprintf(cmd, "%lu", get_rate_ctr_value(ctr, intv));
+	cmd->reply = talloc_asprintf(cmd, "%"PRIu64, get_rate_ctr_value(ctr, intv));
 	if (!cmd->reply)
 		goto oom;
 
diff --git a/openbsc/src/osmo-bsc/osmo_bsc_bssap.c b/openbsc/src/osmo-bsc/osmo_bsc_bssap.c
index 42a3897..0c114c4 100644
--- a/openbsc/src/osmo-bsc/osmo_bsc_bssap.c
+++ b/openbsc/src/osmo-bsc/osmo_bsc_bssap.c
@@ -470,7 +470,7 @@
 
 	header = (struct dtap_header *) msg->l3h;
 	if (sizeof(*header) >= length) {
-		LOGP(DMSC, LOGL_ERROR, "The DTAP header does not fit. Wanted: %lu got: %u\n", sizeof(*header), length);
+		LOGP(DMSC, LOGL_ERROR, "The DTAP header does not fit. Wanted: %zu got: %u\n", sizeof(*header), length);
                 LOGP(DMSC, LOGL_ERROR, "hex: %s\n", osmo_hexdump(msg->l3h, length));
                 return -1;
 	}
diff --git a/openbsc/src/osmo-bsc_mgcp/mgcp_main.c b/openbsc/src/osmo-bsc_mgcp/mgcp_main.c
index f73e73d..6f22f90 100644
--- a/openbsc/src/osmo-bsc_mgcp/mgcp_main.c
+++ b/openbsc/src/osmo-bsc_mgcp/mgcp_main.c
@@ -158,8 +158,8 @@
 		perror("Gateway failed to read");
 		return -1;
 	} else if (slen > sizeof(addr)) {
-		fprintf(stderr, "Gateway received message from outerspace: %lu %lu\n",
-			(unsigned long int)slen, sizeof(addr));
+		fprintf(stderr, "Gateway received message from outerspace: %zu %zu\n",
+			slen, sizeof(addr));
 		return -1;
 	}