diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9fe616a..f141a72 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -25,7 +25,7 @@ project (
 
   # Some informational package metadata. Not necessary for the build.
   # Sets PROJECT_HOMEPAGE_URL and PROJECT_DESCRIPTION
-  HOMEPAGE_URL https://github.com/herzbube/libsgfcplusplus
+  HOMEPAGE_URL "https://github.com/herzbube/libsgfcplusplus"
   DESCRIPTION "A C++ library that uses SGFC to read and write SGF (Smart Game Format) data."
 )