--- a/bandwidthd.c
+++ b/bandwidthd.c
@@ -893,7 +893,7 @@ void StoreIPDataInCDF(struct IPData IncD
 		{
 		IPData = &IncData[counter];
 		HostIp2CharIp(IPData->ip, IPBuffer);
-		fprintf(cdf, "%s,%lu,", IPBuffer, IPData->timestamp);
+		fprintf(cdf, "%s,%" PRId64 ",", IPBuffer, IPData->timestamp);
 		Stats = &(IPData->Send);
 		fprintf(cdf, "%llu,%llu,%llu,%llu,%llu,%llu,%llu,", Stats->total, Stats->icmp, Stats->udp, Stats->tcp, Stats->ftp, Stats->http, Stats->p2p); 
 		Stats = &(IPData->Receive);
@@ -1089,7 +1089,7 @@ int RCDF_Test(char *filename)
 		if (fseek(cdf, -2, SEEK_CUR) == -1)
 			break;
 		}
-	if(fscanf(cdf, " %15[0-9.],%lu,", ipaddrBuffer, &timestamp) != 2)
+	if(fscanf(cdf, " %15[0-9.],%" PRId64 ",", ipaddrBuffer, &timestamp) != 2)
 		{
 		syslog(LOG_ERR, "%s is corrupted, skipping", filename); 
 		return FALSE;
@@ -1122,7 +1122,7 @@ void RCDF_PositionStream(FILE *cdf)
 			}
 		while (fgetc(cdf) != '\n' && !feof(cdf)); // Read to next line
 		ungetc('\n', cdf);  // Just so the fscanf mask stays identical
-        if(fscanf(cdf, " %15[0-9.],%lu,", ipaddrBuffer, &timestamp) != 2)
+        if(fscanf(cdf, " %15[0-9.],%" PRId64 ",", ipaddrBuffer, &timestamp) != 2)
 			{
 			syslog(LOG_ERR, "Unknown error while scanning for beginning of data...\n");
 			return;	
@@ -1144,7 +1144,7 @@ void RCDF_Load(FILE *cdf)
 
     for(Counter = 0; !feof(cdf) && !ferror(cdf); Counter++)
 	    {
-		if(fscanf(cdf, " %15[0-9.],%lu,", ipaddrBuffer, &timestamp) != 2) 
+		if(fscanf(cdf, " %15[0-9.],%" PRId64 ",", ipaddrBuffer, &timestamp) != 2)
 			goto End_RecoverDataFromCdf;
 
 		if (!timestamp) // First run through loop