diff --git a/winsup/cygwin/cygheap.h b/winsup/cygwin/cygheap.h
index 4575572ba..2e0a1e254 100644
--- a/winsup/cygwin/cygheap.h
+++ b/winsup/cygwin/cygheap.h
@@ -428,5 +428,5 @@ char *__stdcall cstrdup (const char *) __attribute__ ((regparm(1)));
 char *__stdcall cstrdup1 (const char *) __attribute__ ((regparm(1)));
 void __stdcall cfree_and_set (char *&, char * = NULL) __attribute__ ((regparm(2)));
 void __stdcall cygheap_init ();
-extern DWORD _cygheap_start  __attribute__((section(".cygheap")));
+extern DWORD _cygheap_start __attribute__((section(".cygheap")));
 }