diff --git a/src/experiments/rampage/campaign.cc b/src/experiments/rampage/campaign.cc
index 8d984229..0b26f2ae 100644
--- a/src/experiments/rampage/campaign.cc
+++ b/src/experiments/rampage/campaign.cc
@@ -79,8 +79,8 @@ bool RAMpageCampaign::run()
 		//d->msg.set_global_timeout(1000000*60*90); // 90m
 		//d->msg.set_local_timeout(1000000*60*20); // 20m
 		//d->msg.set_global_timeout(1000000*60*120); // 120m
-		d->msg.set_local_timeout(1000000*60*30); // 30m
-		d->msg.set_global_timeout(1000000*60*120); // 120m
+		d->msg.set_local_timeout(1000000ULL*60*30); // 30m
+		d->msg.set_global_timeout(1000000ULL*60*120); // 120m
 		campaignmanager.addParam(d);
 	}
 	campaignmanager.noMoreParameters();
diff --git a/src/experiments/rampage/rampage.proto b/src/experiments/rampage/rampage.proto
index b306a807..2ef68b72 100644
--- a/src/experiments/rampage/rampage.proto
+++ b/src/experiments/rampage/rampage.proto
@@ -19,9 +19,9 @@ message RAMpageProtoMsg {
 	// number of empty passes until we give up
 	required uint32 empty_passes = 5;
 	// local timeout (between newlines on ttyS1)
-	required uint32 local_timeout = 6;
+	required uint64 local_timeout = 6;
 	// global timeout
-	required uint32 global_timeout = 7;
+	required uint64 global_timeout = 7;
 
 	// ----------------------------------------------------