diff --git a/build.rs b/build.rs
index a9998e997..d5b2807f3 100644
--- a/build.rs
+++ b/build.rs
@@ -4,6 +4,7 @@ fn main() {
     gcc::Config::new()
                 .cpp(true)
                 .flag("-std=c++11")
+                .flag("-O3")
                 .include("./cpp/SIMDCompressionAndIntersection/include")
                 .object("cpp/SIMDCompressionAndIntersection/bitpacking.o")
                 .object("cpp/SIMDCompressionAndIntersection/integratedbitpacking.o")
diff --git a/src/core/writer.rs b/src/core/writer.rs
index 23b254eb2..1d7fd128b 100644
--- a/src/core/writer.rs
+++ b/src/core/writer.rs
@@ -87,13 +87,6 @@ pub struct SegmentWriter {
 	tokenizer: SimpleTokenizer,
 }
 
-impl Drop for SegmentWriter {
-    fn drop(&mut self) {
-        println!("num tokens {}", self.num_tokens);
-    }
-}
-
-
 impl SegmentWriter {
 
 	fn new() -> SegmentWriter {