diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index e4c225a077..ebe8683b23 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2012-03-16  Pierre Muller  <muller@ics.u-strasbg.fr>
+
+	* amd64-windows-nat.c (_initialize_amd64_windows_nat):
+	Add missing prototype.
+
 2012-03-16  Yao Qi  <yao@codesourcery.com>
 	    Jan Kratochvil  <jan.kratochvil@redhat.com>
 
diff --git a/gdb/amd64-windows-nat.c b/gdb/amd64-windows-nat.c
index 49119d10fa..bc2c0475eb 100644
--- a/gdb/amd64-windows-nat.c
+++ b/gdb/amd64-windows-nat.c
@@ -85,6 +85,9 @@ static const int mappings[] =
 };
 #undef context_offset
 
+/* -Wmissing-prototypes */
+extern initialize_file_ftype _initialize_amd64_windows_nat;
+
 void
 _initialize_amd64_windows_nat (void)
 {