diff --git a/ctaocrypt/src/asn.c b/ctaocrypt/src/asn.c
index c84bd6ba3..16cbcd76b 100644
--- a/ctaocrypt/src/asn.c
+++ b/ctaocrypt/src/asn.c
@@ -184,10 +184,10 @@ struct tm* gmtime(const time_t* timer)
     dayclock = (unsigned long)secs % SECS_DAY;
     dayno    = (unsigned long)secs / SECS_DAY;
 
-    ret->tm_sec  =  dayclock % 60;
-    ret->tm_min  = (dayclock % 3600) / 60;
-    ret->tm_hour =  dayclock / 3600;
-    ret->tm_wday = (dayno + 4) % 7;        /* day 0 a Thursday */
+    ret->tm_sec  = (int) dayclock % 60;
+    ret->tm_min  = (int)(dayclock % 3600) / 60;
+    ret->tm_hour = (int) dayclock / 3600;
+    ret->tm_wday = (int) (dayno + 4) % 7;        /* day 0 a Thursday */
 
     while(dayno >= (unsigned long)YEARSIZE(year)) {
         dayno -= YEARSIZE(year);
@@ -195,7 +195,7 @@ struct tm* gmtime(const time_t* timer)
     }
 
     ret->tm_year = year - YEAR0;
-    ret->tm_yday = dayno;
+    ret->tm_yday = (int)dayno;
     ret->tm_mon  = 0;
 
     while(dayno >= (unsigned long)_ytab[LEAPYEAR(year)][ret->tm_mon]) {
@@ -203,7 +203,7 @@ struct tm* gmtime(const time_t* timer)
         ret->tm_mon++;
     }
 
-    ret->tm_mday  = ++dayno;
+    ret->tm_mday  = (int)++dayno;
     ret->tm_isdst = 0;
 
     return ret;