diff --git a/src/ChangeLog b/src/ChangeLog
index 0350d36ea06..1985cdc3768 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2011-04-25  Dan Nicolaescu  <dann@ics.uci.edu>
+
+	* alloc.c (check_sblock, check_string_bytes)
+	(check_string_free_list): Convert to standard C.
+
 2011-04-25  Teodor Zlatanov  <tzz@lifelogs.com>
 
 	* w32.c (emacs_gnutls_push): Fix typo.
diff --git a/src/alloc.c b/src/alloc.c
index 412527b41a0..be640b6a52c 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -1706,8 +1706,7 @@ string_bytes (struct Lisp_String *s)
 /* Check validity of Lisp strings' string_bytes member in B.  */
 
 static void
-check_sblock (b)
-     struct sblock *b;
+check_sblock (struct sblock *b)
 {
   struct sdata *from, *end, *from_end;
 
@@ -1740,8 +1739,7 @@ check_sblock (b)
    recently allocated strings.  Used for hunting a bug.  */
 
 static void
-check_string_bytes (all_p)
-     int all_p;
+check_string_bytes (int all_p)
 {
   if (all_p)
     {
@@ -1769,7 +1767,7 @@ check_string_bytes (all_p)
    This may catch buffer overrun from a previous string.  */
 
 static void
-check_string_free_list ()
+check_string_free_list (void)
 {
   struct Lisp_String *s;