diff --git a/plugins/thunar-wallpaper/twp-provider.c b/plugins/thunar-wallpaper/twp-provider.c
index f8c8e8c8ebc97ab678612daab23834b3a2a0d018..b68b9168083143a47aa6e6bc5654d70b3ae9e8da 100644
--- a/plugins/thunar-wallpaper/twp-provider.c
+++ b/plugins/thunar-wallpaper/twp-provider.c
@@ -201,7 +201,7 @@ twp_provider_get_file_actions (ThunarxMenuProvider *menu_provider,
 
   if ((desktop_type == DESKTOP_TYPE_NONE) && (action != NULL))
     {
-        //gtk_widget_set_sensitive (action, FALSE);
+        /* gtk_widget_set_sensitive (action, FALSE); */
     }
 
   return actions;
diff --git a/tdb/tdbtool.c b/tdb/tdbtool.c
index 857a14085e2dfe0f76447d1d069c38c2c1e3afc9..ab5947490054f77ce7ac0f5fabde69f384e5bed3 100644
--- a/tdb/tdbtool.c
+++ b/tdb/tdbtool.c
@@ -482,9 +482,9 @@ int main(int argc, char *argv[])
             delete_tdb();
         } else if (strcmp(tok,"dump") == 0) {
             bIterate = 0;
-      if(open_dump_file() == 0) { //open file
+      if(open_dump_file() == 0) { /* open file */
         tdb_traverse(tdb, print_rec, NULL);
-        close_dump_file(); //close file
+        close_dump_file(); /* close file */
       }
       pDumpFile = stdout;
         } else if (strcmp(tok,"list") == 0) {
diff --git a/thunar/thunar-io-scan-directory.c b/thunar/thunar-io-scan-directory.c
index 3cb0bee886762d503cd153b69c0cf2b6703b5f03..7d0432ff74ed6c3ba1c0ba77f7809e4f1c6cd93e 100644
--- a/thunar/thunar-io-scan-directory.c
+++ b/thunar/thunar-io-scan-directory.c
@@ -1,4 +1,4 @@
-//* vi:set et ai sw=2 sts=2 ts=2: */
+/* vi:set et ai sw=2 sts=2 ts=2: */
 /*-
  * Copyright (c) 2009 Jannis Pohlmann <jannis@xfce.org>
  *
diff --git a/thunar/thunar-list-model.c b/thunar/thunar-list-model.c
index adea6526e1e205489d44b78d244ef2538e8f26f3..dacb4ad3906247af398a2a10dcfeb7ad2c7e1ee7 100644
--- a/thunar/thunar-list-model.c
+++ b/thunar/thunar-list-model.c
@@ -1212,7 +1212,7 @@ thunar_list_model_folder_destroy (ThunarFolder    *folder,
 
   thunar_list_model_set_folder (store, NULL);
 
-  // TODO: What to do when the folder is deleted?
+  /* TODO: What to do when the folder is deleted? */
 }
 
 
@@ -1455,7 +1455,7 @@ sort_by_group (const ThunarFile *a,
       gid_b = g_file_info_get_attribute_uint32 (thunar_file_get_info (b),
                                                 G_FILE_ATTRIBUTE_UNIX_GID);
       
-      result = CLAMP (gid_a - gid_b, -1, 1);
+      result = CLAMP ((gint) gid_a - (gint) gid_b, -1, 1);
     }
 
   if (group_a != NULL)
@@ -1554,7 +1554,7 @@ sort_by_owner (const ThunarFile *a,
       uid_b = g_file_info_get_attribute_uint32 (thunar_file_get_info (b),
                                                 G_FILE_ATTRIBUTE_UNIX_UID);
 
-      result = CLAMP (uid_a - uid_b, -1, 1);
+      result = CLAMP ((gint) uid_a - (gint) uid_b, -1, 1);
     }
 
   if (result == 0)
@@ -1652,7 +1652,7 @@ sort_by_type (const ThunarFile *a,
   g_free (description_b);
 
   if (result == 0)
-    result = sort_by_name (a, b, case_sensitive);
+    return sort_by_name (a, b, case_sensitive);
   else
     return result;
 }