diff --git a/capture_opts.c b/capture_opts.c
index 81aadb85f8..de857ad06c 100644
--- a/capture_opts.c
+++ b/capture_opts.c
@@ -172,7 +172,7 @@ capture_opts_log(const char *log_domain, GLogLevelFlags log_level, capture_optio
 
     g_log(log_domain, log_level, "AutostopFiles   (%u): %u", capture_opts->has_autostop_files, capture_opts->autostop_files);
     g_log(log_domain, log_level, "AutostopPackets (%u): %u", capture_opts->has_autostop_packets, capture_opts->autostop_packets);
-    g_log(log_domain, log_level, "AutostopFilesize(%u): %" G_GINT64_MODIFIER "d (KB)", capture_opts->has_autostop_filesize, capture_opts->autostop_filesize);
+    g_log(log_domain, log_level, "AutostopFilesize(%u): %u (KB)", capture_opts->has_autostop_filesize, capture_opts->autostop_filesize);
     g_log(log_domain, log_level, "AutostopDuration(%u): %u", capture_opts->has_autostop_duration, capture_opts->autostop_duration);
 
     g_log(log_domain, log_level, "ForkChild          : %d", capture_opts->fork_child);
@@ -220,7 +220,7 @@ set_autostop_criterion(capture_options *capture_opts, const char *autostoparg)
     capture_opts->autostop_duration = get_positive_int(p,"autostop duration");
   } else if (strcmp(autostoparg,"filesize") == 0) {
     capture_opts->has_autostop_filesize = TRUE;
-    capture_opts->autostop_filesize = get_positive_int64(p,"autostop filesize");
+    capture_opts->autostop_filesize = get_positive_int(p,"autostop filesize");
   } else if (strcmp(autostoparg,"files") == 0) {
     capture_opts->multi_files_on = TRUE;
     capture_opts->has_autostop_files = TRUE;
@@ -272,7 +272,7 @@ get_ring_arguments(capture_options *capture_opts, const char *arg)
     capture_opts->ring_num_files = get_positive_int(p, "number of ring buffer files");
   } else if (strcmp(arg,"filesize") == 0) {
     capture_opts->has_autostop_filesize = TRUE;
-    capture_opts->autostop_filesize = get_positive_int64(p, "ring buffer filesize");
+    capture_opts->autostop_filesize = get_positive_int(p, "ring buffer filesize");
   } else if (strcmp(arg,"duration") == 0) {
     capture_opts->has_file_duration = TRUE;
     capture_opts->file_duration = get_positive_int(p, "ring buffer duration");
diff --git a/capture_opts.h b/capture_opts.h
index c6f55b2478..9cd688c32e 100644
--- a/capture_opts.h
+++ b/capture_opts.h
@@ -144,7 +144,7 @@ typedef struct capture_options_tag {
     int autostop_packets;           /**< Maximum packet count */
     gboolean has_autostop_filesize; /**< TRUE if maximum capture file size
                                          is specified */
-    gint64 autostop_filesize;       /**< Maximum capture file size in KB */
+    gint32 autostop_filesize;       /**< Maximum capture file size */
     gboolean has_autostop_duration; /**< TRUE if maximum capture duration
                                          is specified */
     gint32 autostop_duration;       /**< Maximum capture duration */
diff --git a/capture_sync.c b/capture_sync.c
index e18161888f..68b79f7928 100644
--- a/capture_sync.c
+++ b/capture_sync.c
@@ -391,7 +391,7 @@ sync_pipe_start(capture_options *capture_opts) {
     if(capture_opts->multi_files_on) {
       if (capture_opts->has_autostop_filesize) {
         argv = sync_pipe_add_arg(argv, &argc, "-b");
-        g_snprintf(sfilesize, ARGV_NUMBER_LEN, "filesize:%" G_GINT64_MODIFIER "d",capture_opts->autostop_filesize);
+        g_snprintf(sfilesize, ARGV_NUMBER_LEN, "filesize:%d",capture_opts->autostop_filesize);
         argv = sync_pipe_add_arg(argv, &argc, sfilesize);
       }
 
@@ -415,7 +415,7 @@ sync_pipe_start(capture_options *capture_opts) {
     } else {
         if (capture_opts->has_autostop_filesize) {
           argv = sync_pipe_add_arg(argv, &argc, "-a");
-          g_snprintf(sautostop_filesize, ARGV_NUMBER_LEN, "filesize:%" G_GINT64_MODIFIER "d",capture_opts->autostop_filesize);
+          g_snprintf(sautostop_filesize, ARGV_NUMBER_LEN, "filesize:%d",capture_opts->autostop_filesize);
           argv = sync_pipe_add_arg(argv, &argc, sautostop_filesize);
         }
     }
diff --git a/clopts_common.c b/clopts_common.c
index 411c59cce1..1c7cea9b16 100644
--- a/clopts_common.c
+++ b/clopts_common.c
@@ -74,50 +74,3 @@ get_positive_int(const char *string, const char *name)
 
   return number;
 }
-
-gint64
-get_natural_int64(const char *string, const char *name)
-{
-  gint64 number;
-  char *p;
-
-#if GLIB_CHECK_VERSION(2,12,0)
-  number = g_ascii_strtoll(string, &p, 10);
-#elif defined(HAVE_STRTOLL)
-  number = strtoll(string, &p, 10);
-#else
-  /* Punt and grab a 32-bit value */
-  number = strtol(string, &p, 10);
-#endif
-
-  if (p == string || *p != '\0') {
-    cmdarg_err("The specified %s \"%s\" isn't a decimal number", name, string);
-    exit(1);
-  }
-  if (number < 0) {
-    cmdarg_err("The specified %s \"%s\" is a negative number", name, string);
-    exit(1);
-  }
-  if (number > G_MAXINT64) { /* XXX - ??? */
-    cmdarg_err("The specified %s \"%s\" is too large (greater than %" G_GINT64_MODIFIER "d)",
-	       name, string, G_MAXINT64);
-    exit(1);
-  }
-  return number;
-}
-
-
-gint64
-get_positive_int64(const char *string, const char *name)
-{
-  gint64 number;
-
-  number = get_natural_int64(string, name);
-
-  if (number == 0) {
-    cmdarg_err("The specified %s is zero", name);
-    exit(1);
-  }
-
-  return number;
-}
diff --git a/clopts_common.h b/clopts_common.h
index 9077ead647..3341fd0519 100644
--- a/clopts_common.h
+++ b/clopts_common.h
@@ -30,10 +30,8 @@ extern "C" {
 #endif /* __cplusplus */
 
 int get_natural_int(const char *string, const char *name);
-int get_positive_int(const char *string, const char *name);
 
-gint64 get_natural_int64(const char *string, const char *name);
-gint64 get_positive_int64(const char *string, const char *name);
+int get_positive_int(const char *string, const char *name);
 
 #ifdef __cplusplus
 }