diff --git a/vpi/fstapi.c b/vpi/fstapi.c
index 2491e968e..b0d7dfc40 100644
--- a/vpi/fstapi.c
+++ b/vpi/fstapi.c
@@ -1072,9 +1072,9 @@ if(!sysctl(mib, 2, &v, &length, NULL, 0))
         {
         v /= 8;
 
-        if(v > FST_BREAK_SIZE)
+        if(v > (int64_t)FST_BREAK_SIZE)
                 {
-                if(v > FST_BREAK_SIZE_MAX)
+                if(v > (int64_t)FST_BREAK_SIZE_MAX)
                         {
                         v = FST_BREAK_SIZE_MAX;
                         }
diff --git a/vpi/lxt2_write.c b/vpi/lxt2_write.c
index c1fed8a43..b50aa2359 100644
--- a/vpi/lxt2_write.c
+++ b/vpi/lxt2_write.c
@@ -1057,7 +1057,7 @@ if(!clone)
 for(cnt = 0; cnt < lt->break_header_size; cnt += sizeof(buf))
 	{
 	seg = lt->break_header_size - cnt;
-	if(seg > sizeof(buf))
+	if(seg > (off_t)sizeof(buf))
 		{
 		seg = sizeof(buf);
 		}