diff --git a/Tests/test_imagepath.py b/Tests/test_imagepath.py
index beadff1..a0dee28 100644
--- a/Tests/test_imagepath.py
+++ b/Tests/test_imagepath.py
@@ -47,3 +47,8 @@ def test_path():
     assert_equal(list(p), [(0.0, 1.0)])
     p = ImagePath.Path(array.array("f", [0, 1]).tostring())
     assert_equal(list(p), [(0.0, 1.0)])
+
+def test_getbbox():
+    for coords in (0,1):
+        p = ImagePath.Path(coords)
+        assert_equal(p.getbbox(), (0.0, 0.0, 0.0, 0.0))
diff --git a/path.c b/path.c
index 871da93..059e738 100644
--- a/path.c
+++ b/path.c
@@ -57,7 +57,7 @@ alloc_array(Py_ssize_t count)
         PyErr_NoMemory();
         return NULL;
     }
-    xy = malloc(2 * count * sizeof(double) + 1);
+    xy = calloc(2 * count + 1, sizeof(double));
     if (!xy)
         PyErr_NoMemory();
     return xy;
@@ -336,18 +336,27 @@ path_getbbox(PyPathObject* self, PyObject* args)
 
     xy = self->xy;
 
-    x0 = x1 = xy[0];
-    y0 = y1 = xy[1];
-
-    for (i = 1; i < self->count; i++) {
-	if (xy[i+i] < x0)
-	    x0 = xy[i+i];
-	if (xy[i+i] > x1)
-	    x1 = xy[i+i];
-	if (xy[i+i+1] < y0)
-	    y0 = xy[i+i+1];
-	if (xy[i+i+1] > y1)
-	    y1 = xy[i+i+1];
+    if (self->count == 0) {
+        x0 = x1 = 0;
+        y0 = y1 = 0;
+    } else {
+        x0 = x1 = xy[0];
+        y0 = y1 = xy[1];
+
+        for (i = 1; i < self->count; i++) {
+            if (xy[i + i] < x0) {
+                x0 = xy[i + i];
+            }
+            if (xy[i + i] > x1) {
+                x1 = xy[i + i];
+            }
+            if (xy[i + i + 1] < y0) {
+                y0 = xy[i + i + 1];
+            }
+            if (xy[i + i + 1] > y1) {
+                y1 = xy[i + i + 1];
+            }
+        }
     }
 
     return Py_BuildValue("dddd", x0, y0, x1, y1);