diff --git a/.gitignore b/.gitignore
index 69f42a0..c548dcc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 .pypirc
 *.pdf
+.noseids
 
 # Byte-compiled / optimized / DLL files
 __pycache__/
diff --git a/README.md b/README.md
index af25a27..e18728f 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,6 @@ Use:
 ```python
 >>> from numpy import *
 >>> from permanent import permanent
->>> permanent(eye(15))
+>>> permanent(eye(15, dtype=complex)
 (1-0j)
 ```