diff --git a/ext/standard/tests/filters/bug81302.phpt b/ext/standard/tests/filters/bug81302.phpt
new file mode 100644
index 0000000000000..c78ecace125a7
--- /dev/null
+++ b/ext/standard/tests/filters/bug81302.phpt
@@ -0,0 +1,20 @@
+--TEST--
+Bug #81302 (Stream position after stream filter removed)
+--SKIPIF--
+<?php
+if (!extension_loaded('zlib')) die("skip zlib extension not available");
+?>
+--FILE--
+<?php
+$f = fopen("php://memory", "w+b");
+$z = stream_filter_append($f, "zlib.deflate", STREAM_FILTER_WRITE, 6);
+fwrite($f, "Testing");
+stream_filter_remove($z);
+$pos = ftell($f);
+fseek($f, 0);
+$count = strlen(fread($f, 1024));
+fclose($f);
+var_dump($count === $pos);
+?>
+--EXPECT--
+bool(true)
diff --git a/main/streams/filter.c b/main/streams/filter.c
index a86b6b16d7a88..08cc015cac9d9 100644
--- a/main/streams/filter.c
+++ b/main/streams/filter.c
@@ -470,7 +470,10 @@ PHPAPI int _php_stream_filter_flush(php_stream_filter *filter, int finish)
 	} else if (chain == &(stream->writefilters)) {
 		/* Send flushed data to the stream */
 		while ((bucket = inp->head)) {
-			stream->ops->write(stream, bucket->buf, bucket->buflen);
+			ssize_t count = stream->ops->write(stream, bucket->buf, bucket->buflen);
+			if (count > 0) {
+				stream->position += count;
+			}
 			php_stream_bucket_unlink(bucket);
 			php_stream_bucket_delref(bucket);
 		}