diff --git a/src/rendermode-cave.c b/src/rendermode-cave.c
index 88a7d83..ae5b565 100644
--- a/src/rendermode-cave.c
+++ b/src/rendermode-cave.c
@@ -163,10 +163,11 @@ rendermode_cave_occluded(void *data, RenderState *state) {
 static int
 rendermode_cave_start(void *data, RenderState *state) {
     RenderModeCave* self;
+    int ret;
     self = (RenderModeCave *)data;
 
     /* first, chain up */
-    int ret = rendermode_normal.start(data, state);
+    ret = rendermode_normal.start(data, state);
     if (ret != 0)
         return ret;
 
@@ -203,10 +204,11 @@ rendermode_cave_finish(void *data, RenderState *state) {
 static void
 rendermode_cave_draw(void *data, RenderState *state, PyObject *src, PyObject *mask) {
     RenderModeCave* self;
+    int z, r, g, b;
     self = (RenderModeCave *)data;
 
-    int z = state->z;
-    int r = 0, g = 0, b = 0;
+    z = state->z;
+    r = 0, g = 0, b = 0;
 
     /* draw the normal block */
     rendermode_normal.draw(data, state, src, mask);