diff --git a/src/cairo-font.c b/src/cairo-font.c
index bb184c48d..65124803d 100644
--- a/src/cairo-font.c
+++ b/src/cairo-font.c
@@ -130,6 +130,12 @@ cairo_font_face_destroy (cairo_font_face_t *font_face)
     free (font_face);
 }
 
+/**
+ * cairo_font_face_get_type:
+ * @font_face: a #cairo_font_face_t
+ * 
+ * Return value: The type of @font_face. See #cairo_font_type_t.
+ **/
 cairo_font_type_t
 cairo_font_face_get_type (cairo_font_face_t *font_face)
 {
diff --git a/src/cairo-pattern.c b/src/cairo-pattern.c
index a9628a3c9..8aa296988 100644
--- a/src/cairo-pattern.c
+++ b/src/cairo-pattern.c
@@ -524,6 +524,12 @@ cairo_pattern_reference (cairo_pattern_t *pattern)
     return pattern;
 }
 
+/**
+ * cairo_pattern_get_type:
+ * @pattern: a #cairo_pattern_t
+ * 
+ * Return value: The type of @pattern. See #cairo_pattern_type_t.
+ **/
 cairo_pattern_type_t
 cairo_pattern_get_type (cairo_pattern_t *pattern)
 {
diff --git a/src/cairo-scaled-font.c b/src/cairo-scaled-font.c
index 46e1caccf..a0469046d 100644
--- a/src/cairo-scaled-font.c
+++ b/src/cairo-scaled-font.c
@@ -118,6 +118,12 @@ _cairo_scaled_font_set_error (cairo_scaled_font_t *scaled_font,
     _cairo_error (status);
 }
 
+/**
+ * cairo_scaled_font_get_type:
+ * @scaled_font: a #cairo_scaled_font_t
+ * 
+ * Return value: The type of @scaled_font. See #cairo_font_type_t.
+ **/
 cairo_font_type_t
 cairo_scaled_font_get_type (cairo_scaled_font_t *scaled_font)
 {
diff --git a/src/cairo-surface.c b/src/cairo-surface.c
index a317e5b64..b1a36df90 100644
--- a/src/cairo-surface.c
+++ b/src/cairo-surface.c
@@ -121,6 +121,12 @@ _cairo_surface_set_error (cairo_surface_t *surface,
     _cairo_error (status);
 }
 
+/**
+ * cairo_surface_get_type:
+ * @surface: a #cairo_surface_t
+ * 
+ * Return value: The type of @surface. See #cairo_surface_type_t.
+ **/
 cairo_surface_type_t
 cairo_surface_get_type (cairo_surface_t *surface)
 {