diff --git a/src/ox/ptrarith/CMakeLists.txt b/src/ox/ptrarith/CMakeLists.txt
index a3a44531c..a6092fadd 100644
--- a/src/ox/ptrarith/CMakeLists.txt
+++ b/src/ox/ptrarith/CMakeLists.txt
@@ -6,4 +6,6 @@ install(
 		include/ox/ptrarith
 )
 
-add_subdirectory(test)
+if(OX_RUN_TESTS)
+	add_subdirectory(test)
+endif()