diff --git a/src/iterate.c b/src/iterate.c
index b55e3df..89ae0a2 100644
--- a/src/iterate.c
+++ b/src/iterate.c
@@ -160,13 +160,13 @@ generate_pseudo_data(RenderState *state, unsigned char ancilData) {
         return ancilData;
     } else if (state->block == 9) { /* water */
         /* an aditional bit for top is added to the 4 bits of check_adjacent_blocks */
-        if ((ancilData == 0) || (ancilData >= 10)) { /* static water, only top, and unkown ancildata values */
+        if (ancilData == 0) { /* static water, only top, and unkown ancildata values */
             data = 16;
             return data; /* = 0b10000 */
         } else if ((ancilData > 0) && (ancilData < 8)) { /* flowing water */
             data = (check_adjacent_blocks(state, x, y, z, state->block) ^ 0x0f) | 0x10;
             return data;
-        } else if ((ancilData == 8) || (ancilData == 9)) { /* falling water */
+        } else if (ancilData >= 8) { /* falling water */
             data = (check_adjacent_blocks(state, x, y, z, state->block) ^ 0x0f);
             return data;
         }