diff --git a/output.cc b/output.cc
index ecc59d6d5..708302b48 100644
--- a/output.cc
+++ b/output.cc
@@ -114,6 +114,8 @@
 #include "Target.h"
 #include "utils.h"
 
+#include <math.h>
+
 #include <string>
 #include <vector>
 #include <list>
@@ -1528,7 +1530,7 @@ static void printosclassificationoutput(const struct OS_Classification_Results *
 	if (familyno > 0) log_write(LOG_PLAIN, ", ");
 	log_write(LOG_PLAIN, "%s", fullfamily[familyno]);
 	if (*familygenerations[familyno]) log_write(LOG_PLAIN, " %s", familygenerations[familyno]);
-	if (familyaccuracy[familyno] < 1.0) log_write(LOG_PLAIN, " (%d%%)", (int) (familyaccuracy[familyno] * 100));
+	if (familyaccuracy[familyno] < 1.0) log_write(LOG_PLAIN, " (%.f%%)", floor(familyaccuracy[familyno] * 100));
       }
       log_write(LOG_PLAIN, "\n");
     }
@@ -1656,9 +1658,10 @@ void printosscanoutput(Target *currenths) {
           free(p);
         }
 
-        log_write(LOG_PLAIN,"Aggressive OS guesses: %s (%d%%)", FPR->prints[0]->OS_name, (int) (FPR->accuracy[0] * 100));
+        log_write(LOG_PLAIN,"Aggressive OS guesses: %s (%.f%%)", FPR->prints[0]->OS_name, floor(FPR->accuracy[0] * 100));
         for (i = 1; i < 10 && FPR->num_matches > i && FPR->accuracy[i] > FPR->accuracy[0] - 0.10; i++)
-          log_write(LOG_PLAIN,", %s (%d%%)", FPR->prints[i]->OS_name, (int) (FPR->accuracy[i] * 100));
+          log_write(LOG_PLAIN,", %s (%.f%%)", FPR->prints[i]->OS_name, floor(FPR->accuracy[i] * 100));
+
         log_write(LOG_PLAIN, "\n");
       }
 
diff --git a/scan_engine.cc b/scan_engine.cc
index ce9c1d537..97095b0ff 100644
--- a/scan_engine.cc
+++ b/scan_engine.cc
@@ -113,6 +113,7 @@
 #include "Target.h"
 #include "targets.h"
 #include "utils.h"
+#include <math.h>
 #include <list>
 #include <map>
 
@@ -5355,7 +5356,7 @@ void pos_scan(Target *target, u16 *portarray, int numports, stype scantype) {
     tries++;
 
     if (o.debugging) {
-      log_write(LOG_STDOUT, "Finished round #%d. Current stats: numqueries_ideal: %d; min_width: %d; max_width: %d; packet_incr: %d; senddelay: %dus; fallback: %d%%\n", tries, (int) ss.numqueries_ideal, ss.min_width, ss.max_width, ss.packet_incr, senddelay, (int) (100 * ss.fallback_percent));
+      log_write(LOG_STDOUT, "Finished round #%d. Current stats: numqueries_ideal: %d; min_width: %d; max_width: %d; packet_incr: %d; senddelay: %dus; fallback: %.f%%\n", tries, (int) ss.numqueries_ideal, ss.min_width, ss.max_width, ss.packet_incr, senddelay, floor(100 * ss.fallback_percent));
     }
     ss.numqueries_ideal = ss.initial_packet_width;