diff --git a/src/DDClientLibC/DD_time.c b/src/DDClientLibC/DD_time.c
index 568847c..42fdca5 100755
--- a/src/DDClientLibC/DD_time.c
+++ b/src/DDClientLibC/DD_time.c
@@ -15,6 +15,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdarg.h>
+#include <math.h>
 
 #define YEARS 70
 #define STARTYEAR 1970
@@ -117,7 +118,8 @@ void SetIntNew(dd_tmstr_t *UT,t_DDTimeKind timeKind) /* Fill int values of dd_tm
    UT->min = (int)(msrest / msofmin);
    msrest -= (double)(UT->min)*msofmin;
    UT->sec = (int)(msrest);
-   UT->msec = (int)((msrest - (double)(UT->sec))*1000.0);
+   double msec = (msrest - (double)(UT->sec))*1000.0;
+   UT->msec = (int)msec;
    return;
 }
 
diff --git a/src/DDClientLibCpp/DD_time.cc b/src/DDClientLibCpp/DD_time.cc
index 3486fae..4f088ed 100644
--- a/src/DDClientLibCpp/DD_time.cc
+++ b/src/DDClientLibCpp/DD_time.cc
@@ -16,6 +16,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdarg.h>
+#include <math.h>
 
 #define YEARS 70
 
@@ -110,7 +111,8 @@ void SetIntNew(dd_tmstr_t *UT,t_DDTimeKind timeKind) /* Fill int values of dd_tm
    UT->min = (int)(msrest / msofmin);
    msrest -= (double)(UT->min)*msofmin;
    UT->sec = (int)(msrest);
-   UT->msec = (int)((msrest - (double)(UT->sec))*1000.0);
+   double msec = (msrest - (double)(UT->sec))*1000.0;
+   UT->msec = round(msec);
    return;
 }
 
--
libgit2 0.21.2