--- a/pr/src/misc/prtime.c
+++ b/pr/src/misc/prtime.c
@@ -1621,7 +1621,7 @@
             case TT_EET: zone_offset =  2 * 60; break;
             case TT_JST: zone_offset =  9 * 60; break;
             default:
-                PR_ASSERT (0);
+                return PR_FAILURE;
                 break;
         }
     }
@@ -1677,11 +1677,12 @@
         struct tm localTime;
         time_t secs;
 
-        PR_ASSERT(result->tm_month > -1 &&
+        if (!(result->tm_month > -1 &&
                   result->tm_mday > 0 &&
                   result->tm_hour > -1 &&
                   result->tm_min > -1 &&
-                  result->tm_sec > -1);
+                  result->tm_sec > -1))
+                 return PR_FAILURE;
 
         /*
          * To obtain time_t from a tm structure representing the local