diff --git a/README.md b/README.md
index 1b8187a..5da2b6b 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
-# opencl-fdtd
+# opencl_fdtd
 
-**opencl-fdtd** is a python application for running 3D time-domain
+**opencl_fdtd** is a python application for running 3D time-domain
 electromagnetic simulations on parallel compute hardware (mainly GPUs).
 
 **Performance** highly depends on what hardware you have available: