diff --git a/libvips/foreign/foreign.c b/libvips/foreign/foreign.c
index 2e777a93..76e3d19f 100644
--- a/libvips/foreign/foreign.c
+++ b/libvips/foreign/foreign.c
@@ -1865,7 +1865,7 @@ vips_foreign_save( VipsImage *in, const char *name, ... )
 	return( result );
 }
 
-/* Can thsi class write this filetype to a stream?
+/* Can this class write this filetype to a stream?
  */
 static void *
 vips_foreign_find_save_stream_sub( VipsForeignSaveClass *save_class, 
@@ -1874,8 +1874,6 @@ vips_foreign_find_save_stream_sub( VipsForeignSaveClass *save_class,
 	VipsObjectClass *object_class = VIPS_OBJECT_CLASS( save_class );
 	VipsForeignClass *class = VIPS_FOREIGN_CLASS( save_class );
 
-	printf( "testing %s for %s\n", object_class->nickname, suffix );
-
 	if( class->suffs &&
 		vips_ispostfix( object_class->nickname, "_stream" ) &&
 		vips_filename_suffix_match( suffix, class->suffs ) )
diff --git a/libvips/foreign/jpegload.c b/libvips/foreign/jpegload.c
index c277357e..72ed41fc 100644
--- a/libvips/foreign/jpegload.c
+++ b/libvips/foreign/jpegload.c
@@ -33,11 +33,6 @@
 
  */
 
-/*
- */
-#define DEBUG_VERBOSE
-#define DEBUG
-
 #ifdef HAVE_CONFIG_H
 #include <config.h>
 #endif /*HAVE_CONFIG_H*/
diff --git a/libvips/iofuncs/image.c b/libvips/iofuncs/image.c
index 297fc180..4b75c23d 100644
--- a/libvips/iofuncs/image.c
+++ b/libvips/iofuncs/image.c
@@ -2180,7 +2180,7 @@ vips_image_new_from_buffer( const void *buf, size_t len,
  * a NULL-terminated list of name-value pairs at the end of the arguments.
  * Options given in the function call override options given in the string. 
  *
- * See also: vips_image_write_to_buffer().
+ * See also: vips_image_write_to_stream().
  *
  * Returns: (transfer full): the new #VipsImage, or %NULL on error.
  */
diff --git a/libvips/iofuncs/stream.c b/libvips/iofuncs/stream.c
index 4db7cda7..42a48429 100644
--- a/libvips/iofuncs/stream.c
+++ b/libvips/iofuncs/stream.c
@@ -632,7 +632,8 @@ vips_stream_input_decode( VipsStreamInput *input )
 
 /**
  * vips_stream_input_sniff: 
- * @bytes: number of bytes to sniff
+ * @input: sniff this stream
+ * @length: number of bytes to sniff
  *
  * Return a pointer to the first few bytes of the file.
  */
@@ -864,12 +865,8 @@ vips_stream_output_new_from_filename( const char *filename )
 /**
  * vips_stream_output_new_memory:
  *
- * Optional args:
- *
- * @blob: #VipsBlob, memory area containing output
- *
- * Create a stream which will output to a memory area. Use @blob to get
- * memory output, if this is a memory stream.
+ * Create a stream which will output to a memory area. Read from @blob to get
+ * memory output.
  *
  * See also: vips_stream_output_write().
  *