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diff --git a/src/cairo-image-surface.c b/src/cairo-image-surface.c
index e9e544d..cde68a1 100644
--- a/src/cairo-image-surface.c
+++ b/src/cairo-image-surface.c
@@ -324,8 +324,8 @@ _cairo_image_surface_create_with_pixman_format (unsigned char *data,
cairo_surface_t *surface;
pixman_image_t *pixman_image;
- pixman_image = pixman_image_create_bits (pixman_format, width, height,
- (uint32_t *) data, stride);
+ pixman_image = pixman_image_create_bits (pixman_format, width ? width : 1, height ? height : 1,
+ (uint32_t *) data, stride ? stride : 4);
if (unlikely (pixman_image == NULL))
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
diff --git a/src/cairo-xlib-surface.c b/src/cairo-xlib-surface.c
index f86a133..ddcb600 100644
--- a/src/cairo-xlib-surface.c
+++ b/src/cairo-xlib-surface.c
@@ -675,7 +675,8 @@ _get_image_surface (cairo_xlib_surface_t *surface,
pixmap = XCreatePixmap (surface->dpy,
surface->drawable,
- extents.width, extents.height,
+ extents.width <= 0 ? 1 : extents.width,
+ extents.height <= 0 ? 1 : extents.height,
surface->depth);
if (pixmap) {
XCopyArea (surface->dpy, surface->drawable, pixmap, surface->gc,
@@ -686,7 +687,8 @@ _get_image_surface (cairo_xlib_surface_t *surface,
ximage = XGetImage (surface->dpy,
pixmap,
0, 0,
- extents.width, extents.height,
+ extents.width <= 0 ? 1 : extents.width,
+ extents.height <= 0 ? 1 : extents.height,
AllPlanes, ZPixmap);
XFreePixmap (surface->dpy, pixmap);
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