2 files changed, 2 insertions, 2 deletions
diff --git a/include/gc.h b/include/gc.h
index 960481db..a31b7071 100644
--- a/include/gc.h
+++ b/include/gc.h
@@ -1106,7 +1106,7 @@ extern "C" {
         || defined(_WIN32) && !defined(__CYGWIN32__) && !defined(__CYGWIN__))
   /* win32S may not free all resources on process exit.  */
   /* This explicitly deallocates the heap.		 */
-    GC_API void GC_win32_free_heap ();
+    GC_API void GC_win32_free_heap (void);
 #endif
 
 #ifdef __cplusplus
diff --git a/os_dep.c b/os_dep.c
index dca79850..2c4e3a8e 100644
--- a/os_dep.c
+++ b/os_dep.c
@@ -1884,7 +1884,7 @@ word bytes;
     return(result);			  
 }
 
-void GC_win32_free_heap ()
+void GC_win32_free_heap (void)
 {
     if (GC_no_win32_dlls) {
  	while (GC_n_heap_bases > 0) {