diff --git a/test/a1-mask.c b/test/a1-mask.c
index 0be1d07b7..c52aa9dd9 100644
--- a/test/a1-mask.c
+++ b/test/a1-mask.c
@@ -125,6 +125,7 @@ draw (cairo_t *cr, int dst_width, int dst_height)
 	    dst += stride;
 	}
     }
+    cairo_surface_mark_dirty (surface);
 
     /* Paint background blue */
     cairo_set_source_rgb (cr, 0, 0, 1); /* blue */
diff --git a/test/large-source.c b/test/large-source.c
index b02b493a5..2b6b84fb4 100644
--- a/test/large-source.c
+++ b/test/large-source.c
@@ -62,6 +62,7 @@ draw (cairo_t *cr, int width, int height)
 		data[x] = RED_MASK;
 	    data += stride;
 	}
+        cairo_surface_mark_dirty (surface);
     }
 
     cairo_set_source_rgb (cr, 1, 0, 0); /* red */
@@ -81,6 +82,7 @@ draw (cairo_t *cr, int width, int height)
 		data[x] = GREEN_MASK;
 	    data += stride;
 	}
+        cairo_surface_mark_dirty (surface);
     }
 
     cairo_set_source_rgb (cr, 0, 1, 0); /* green */
diff --git a/test/user-font-mask.c b/test/user-font-mask.c
index 6fd40c875..a6d394e9f 100644
--- a/test/user-font-mask.c
+++ b/test/user-font-mask.c
@@ -126,6 +126,7 @@ test_scaled_font_render_glyph (cairo_scaled_font_t  *scaled_font,
 	*data = CAIRO_BITSWAP8_IF_LITTLE_ENDIAN (byte);
 	data += cairo_image_surface_get_stride (image);
     }
+    cairo_surface_mark_dirty (image);
 
     pattern = cairo_pattern_create_for_surface (image);
     cairo_surface_destroy (image);