diff --git a/examples/.cvsignore b/examples/.cvsignore
index 1d1f49d3d1ae48401ae923353d6a02b745e3a925..a7c126c7b681f9ed0b2b57721f35dfeea16582cf 100644
--- a/examples/.cvsignore
+++ b/examples/.cvsignore
@@ -1,5 +1,6 @@
 *.d
 Makefile
+eratosthenes
 nettle-benchmark
 rsa-decrypt
 rsa-encrypt
diff --git a/examples/.gitignore b/examples/.gitignore
index 15e92a23e8ca87cc44a6b8248151a389dfc9cee0..4c8eb3debc5961a5de518f2cf38a4817dc23d1a2 100644
--- a/examples/.gitignore
+++ b/examples/.gitignore
@@ -1,5 +1,6 @@
 /*.d
 /Makefile
+/eratosthenes
 /nettle-benchmark
 /rsa-decrypt
 /rsa-encrypt