Index: queue/errmodel.cc
--- queue/errmodel.cc.orig
+++ queue/errmodel.cc
@@ -96,7 +96,7 @@ static class TraceErrorModelClass : public TclClass { 
 	}
 } class_traceerrormodel;
 
-static char* eu_names[] = { EU_NAMES };
+static const char* eu_names[] = { EU_NAMES };
 
 inline double comb(int n, int k) {
 	int i;
@@ -356,7 +356,7 @@ void ErrorModel::trace_event(char *eventtype)
 	char *nwrk = et_->nbuffer();
 	if (wrk != 0)
 		sprintf(wrk,
-			"E "TIME_FORMAT" ErrModelTimer %p %s",
+			"E " TIME_FORMAT " ErrModelTimer %p %s",
 			et_->round(Scheduler::instance().clock()),   // time
 			this,
 			eventtype                    // event type
@@ -364,7 +364,7 @@ void ErrorModel::trace_event(char *eventtype)
 	
 	if (nwrk != 0)
 		sprintf(nwrk,
-			"E -t "TIME_FORMAT" ErrModelTimer %p %s",
+			"E -t " TIME_FORMAT " ErrModelTimer %p %s",
 			et_->round(Scheduler::instance().clock()),   // time
 			this,
 			eventtype                    // event type
@@ -551,7 +551,7 @@ int ComplexTwoStateErrorModel::corruptPkt(Packet*)
 
 
 
-static char * st_names[]={ST_NAMES};
+static const char * st_names[]={ST_NAMES};
 
 /*
 // MultiState ErrorModel: