diff --git a/src/apps/activitymonitor/DataSource.cpp b/src/apps/activitymonitor/DataSource.cpp
index c493593f8c..3adadebcf5 100644
--- a/src/apps/activitymonitor/DataSource.cpp
+++ b/src/apps/activitymonitor/DataSource.cpp
@@ -12,6 +12,7 @@
 #include <Catalog.h>
 #include <OS.h>
 #include <String.h>
+#include <StringForRate.h>
 
 #include "SystemInfo.h"
 
@@ -1225,7 +1226,7 @@ void
 NetworkUsageDataSource::Print(BString& text, int64 value) const
 {
 	char buffer[32];
-	snprintf(buffer, sizeof(buffer), B_TRANSLATE("%.1f KiB/s"), value / 1024.0);
+	string_for_rate(value, buffer, sizeof(buffer));
 
 	text = buffer;
 }
diff --git a/src/apps/activitymonitor/Jamfile b/src/apps/activitymonitor/Jamfile
index d36d3f5fac..6a3a7d0cea 100644
--- a/src/apps/activitymonitor/Jamfile
+++ b/src/apps/activitymonitor/Jamfile
@@ -1,6 +1,6 @@
 SubDir HAIKU_TOP src apps activitymonitor ;
 
-UsePrivateHeaders interface system ;
+UsePrivateHeaders interface shared system ;
 
 Application ActivityMonitor :
 	ActivityMonitor.cpp