diff --git a/ldms/src/sampler/ibmad_records_sampler/ibmad_records_sampler.c b/ldms/src/sampler/ibmad_records_sampler/ibmad_records_sampler.c
index c4b5dab11..b3e7b726b 100644
--- a/ldms/src/sampler/ibmad_records_sampler/ibmad_records_sampler.c
+++ b/ldms/src/sampler/ibmad_records_sampler/ibmad_records_sampler.c
@@ -667,7 +667,7 @@ static void dump_port_filters()
 	for (i = 0 ; i < MAX_CA_NAMES; i++) {
 		if (conf.ports[i].ca_name[0] == '\0')
 			break;
-		ovis_log(mylog, OVIS_LDEBUG, SAMP ": dpf: %s : 0x%x\n",
+		ovis_log(mylog, OVIS_LDEBUG, SAMP ": dpf: %s : 0x%lx\n",
 			conf.ports[i].ca_name, conf.ports[i].port_bits);
 	}
 }
diff --git a/ldms/src/sampler/ibmad_sampler/ibmad_sampler.c b/ldms/src/sampler/ibmad_sampler/ibmad_sampler.c
index 277181149..58940c932 100644
--- a/ldms/src/sampler/ibmad_sampler/ibmad_sampler.c
+++ b/ldms/src/sampler/ibmad_sampler/ibmad_sampler.c
@@ -617,7 +617,7 @@ static void dump_port_filters()
 	for (i = 0 ; i < MAX_CA_NAMES; i++) {
 		if (conf.ports[i].ca_name[0] == '\0')
 			break;
-		ovis_log(mylog, OVIS_LDEBUG, SAMP ": dpf: %s : 0x%x\n",
+		ovis_log(mylog, OVIS_LDEBUG, SAMP ": dpf: %s : 0x%lx\n",
 			conf.ports[i].ca_name, conf.ports[i].port_bits);
 	}
 }