--- a/procinfo.cpp
+++ b/procinfo.cpp
@@ -211,7 +211,7 @@ int mainLoop(bool perSecond, bool showTotals, bool showTotalsMem, bool fullScree
 	try {
 		rows = getNetStats(perSecond, showTotals, skipIfaces, elapsed);
 	} catch (string exceptionMessage) {
-		print(exceptionMessage.c_str());
+		print("%s", exceptionMessage.c_str());
 	}
 	print("\n");
 	prettyPrint(rows, rowWidth, true);