diff --git a/gst/gstallocator.c b/gst/gstallocator.c
index b93c7a3a80..38a7d4fbb6 100644
--- a/gst/gstallocator.c
+++ b/gst/gstallocator.c
@@ -361,7 +361,7 @@ typedef struct
   GstAllocatorClass parent_class;
 } GstAllocatorSysmemClass;
 
-GType gst_allocator_sysmem_get_type (void);
+static GType gst_allocator_sysmem_get_type (void);
 G_DEFINE_TYPE (GstAllocatorSysmem, gst_allocator_sysmem, GST_TYPE_ALLOCATOR);
 
 /* initialize the fields */
diff --git a/win32/common/libgstreamer.def b/win32/common/libgstreamer.def
index 9d477efb46..c5dcf93480 100644
--- a/win32/common/libgstreamer.def
+++ b/win32/common/libgstreamer.def
@@ -82,7 +82,6 @@ EXPORTS
 	gst_allocator_get_type
 	gst_allocator_register
 	gst_allocator_set_default
-	gst_allocator_sysmem_get_type
 	gst_atomic_queue_get_type
 	gst_atomic_queue_length
 	gst_atomic_queue_new